A serial killer taunts the CSIs by leaving them cryptic hints, and the longer it takes them to decode these puzzles, the higher the death toll rises, on the eighth season finale of CSI: MIAMI.

In this thrilling season finale, the loss of one of their own is the first hit the lab will take. Getting back to the lab to process the evidence, they find it has been taken over by Federal Agents looking for stolen money from a previous case.

The Mala Noche gang trial is obstructed when the defendant goes free with the help of the witness who is testifying. When a hit ordered by the Mala Noche gang on Horatio finds the people he loves lives are in danger. Delko finds that an ex-lover is disturbing any woman who he is now close to.

When strange accidents occur in the lab, the CSI team is spooked during a death investigation involving voodoo. As Halloween is near everyone starts to think that the lab is cursed.

A diamond broker carrying two million dollars in merchandise is murdered after his car is hit by another vehicle and he gets out to confront the driver. The only witness to the crime is a developmentally challenged man who says the killer is someone named Colton. Meanwhile, outside of town, Speedle and Delko investigate the death of a teenage girl discovered at a rest stop with a broken neck. Shortly after the victim is taken from the scene, her body disappears during transport to Miami.

Every member of CSI is a suspect when one of the team's enemies is murdered. When the investigation becomes deadly, Samantha Owens ends up having to be rescued.

While investigating the murder of man hired to make dirty bombs that terrorists intend to set off in Miami, Horatio finds the bloody fingerprint of his brother, Raymond, who he believed to be dead. However, when Raymond's son is kidnapped, he emerges from deep undercover and the estranged brothers must work together to save the boy. Meanwhile, while processing a crime scene, an unknown assailant holds a gun to Calleigh's head and, after a deadly confrontation in her gun lab, she is left doubting that she can continue as a CSI.

The CSI's must catch a madman causing havoc all over Miami and the team has to mourn one of their own.

When a teenage girl returns home from a big party night at an underage nightclub to find her parents murdered, the search for the killer leads Horatio to New York City. Before he arrives, the New York detectives, led by Detective Mac Taylor, are called out to investigate the shooting of an undercover police officer – who, it turns out, is the lead suspect in the Miami case. However, the medical examiner determines that he has been dead for 72 hours and could not even have been alive at the time of the double-murder in Miami. After further investigation, Horatio and Mac determine that the real killer murdered the New York cop, then used his ID to get to Miami, and is still on the loose.

Horatio fights to save Yelina and when Delko goes against Calleigh's plea and helps his dangerous father, his life is put in jeopardy.

A former high school football star is murdered at a reunion, the CSIs must find the killer. The victim was the big man on campus in high school and there are a lot of guests at the reunion with reasons to resent him all these years. Now, the team must investigate everyone, from the head cheerleader to the school misfit, to see who held a decade-old grudge big enough to kill. Meanwhile, Horatio and Delko arrive at a crime scene and discover that it's already been processed, leading Horatio to uncover further information about his brother possibly being alive.

The team is sent to investigate the death of a local celebrity, who is found murdered in her bathtub. The list of suspects includes her musician boyfriend, her assistant and her rival. The search for a young abducted girl is triggered, and Horatio tells Delko of Marisol and his plans.

In the second part of the two part episodes, Horatio deals with his past and the rest of the team works to rescue Calleigh from kidnappers.

Three suburban housewives on a girls' weekend in Miami are the prime suspects when the hotel's handsome pool boy is found murdered. When Horatio is tipped off that his team is facing a surprise efficiency review, he must trust Calleigh, Delko and Ryan to work together to find the killer. However, when they independently follow the evidence, each discovers that their analysis points to a different killer.

When a beloved tennis coach is nearly killed, Calleigh discovers a personal connection to the case.

When Horatio's ex-girlfriend is killed in an explosion, the team looks within their own department to find the killer.

An adult film actress is found strangled in the park and the CSIs must find the killer. Blood and human tissue are found under Ashley Anders' nails and the DNA matches that of the CEO of the company that distributes her films – and he's a registered sex offender. Also, Calleigh discovers his answering machine audiotape on which he makes a threat against Ashley. However, there is an accident back at the lab with this crucial piece of evidence and Delko was the last person to handle it. Now, IAB's Rick Stetler is put on the case, much to Horatio's dismay, as the CSIs try to uncover further evidence in order to find the girl's killer.

Delko is found comatose, and we are taken back to the year 1997 to when the team first formed.

After a bitter custody battle, shots are fired outside the courthouse. Bullets fly and the target is the little girl's mother. Horatio goes after the father, who he suspects may not be the girl's biological father after all. However, when the mother's shady past is uncovered, the team finds that she has a lot of enemies who would like to take a shot at her. Meanwhile, Calleigh's father returns to the crime lab for her guidance but for an unexpected reason.

The CSIs must find the killer after a young woman is pushed in front of a moving bus. Alexx finds a bruise shaped like a hand imprint on the victim's back, proving that she was pushed in front of the bus, and her boyfriend, Jay Seaver, is the prime suspect. When one of Jay's office rivals also turns up dead, Jay reveals that he has a psychotic stalker, Claudia, who he thinks might kill to please him. However, when Jay hires a lawyer to protect Claudia, Horatio suspects that Jay may be more involved than they thought. Later, a man's body is discovered down an elevator shaft in a nearby building, and there is evidence to link the victims to a common killer. Meanwhile, Calleigh's father seeks her help when he fears that he may have killed someone after a night of drinking, and Horatio assigns a new CSI, Ryan Wolfe, to the case.

The CSI team must try to find out who is trying to kill a young couple who are released from prison. The couple was made out to be “media darlings” and soon find that not everyone though of them as darlings. Calleigh must work with her ex-boyfriend to help solve the case.

As the first new medical examiner they have is shot, the CSIs learn the streets of Miami got more dangerous. Horatio must keep his team alive and restore order to his son's life. The clock runs out when one of their own is gunned down.

The investigation into a drug heist offers brief glimpses into the private lives of the CSIs, whose nerves are on edge when they become suspects in the crime they're trying to solve. A police convoy headed across town includes an unmarked truck filled with confiscated drugs being taken to an incinerator to be destroyed. The trip ends abruptly when thieves hijack the vehicle, kill its driver and shoot Speedle, who was riding shotgun. It's hard for Horatio when the media draw comparisons to a similar case several years ago in which his brother, an undercover cop, was killed. But it's worse for his team when Internal Affairs decides that one of them tipped off the robbers about the delivery.

Kyle's mom shows up in Miami and she is the widowed wife of a billionaire. She wants Kyle back and will do anything to get him back.

When the Miami Taunter strikes again, Horatio meets with the matriarch of the suspected killer's family.

An explosion in an upscale Miami eatery has the CSI team scrambling to figure out who would target a family enjoying a dinner out, and why...

Wolfe faces a terrible dilemma when he's forced by an unknown assailant to cover up evidence in a murder/robbery, or else the kidnapped Billy Gantry will be killed....

Horatio is quick on the scene when an armored truck carrying $3.2 million is robbed in a daring downtown heist. During the holdup, the driver is killed and Horatio guns down one of the two thieves. The other escapes with the loot, but the money turns out to be counterfeit. The team must figure out what happened to the bank's money before it was replaced with fake bills. Making the day even worse for Horatio, Yelina spies him with his niece and assumes the girl is his illegitimate child, not her own late husband's daughter.

Horatio Caine calls Las Vegas CSI Ray Langston to come to Miami when a severed leg found in the Everglades is discovered to belong to a girl who went missing in Las Vegas a week earlier. The crossover continues on CSI:NY S06E07 Hammer Down (II) and CSI: Crime Scene Investigation S10E07 The Lost Girls (III).

Horatio and the team go head-to-head with a defense attorney who may be involved in a murder cover-up.

Horatio and Speedle's case hinges on the testimony of a forensic-evidence enthusiast who stole a blood-drenched latex glove from the scene of the murder of a man who was stabbed to death with a butterfly knife. When Speedle tracks him down, the CSI wannabe is impressed by the ease with which Speedle was able to locate him, and the two begin to develop a slight bond when he shows up at the crime lab the night before he is set to testify. However, their relationship is cut short when the young man is found dead in his forensics-shrine of a home. Meanwhile, Delko and Calleigh probe the shooting death of a young woman whose body is found wrapped in a plastic garbage bag in a dumpster near the ritzy Miami club where she worked.

A young woman is attacked by a shark and later dies, but it's discovered that she was shot first. The case becomes even more difficult for the CSIs when one of their coworkers becomes a leading suspect. The dead woman worked for a private-investigation agency that specializes in luring and entrapping married men suspected of infidelity.

A corruption scandal is uncovered by the CSI team which forces Horatio to face an old adversary. Malcolm McDowell returns as Darren Vogel.

Evidence leads the CSIs to believe that someone started a massive fire in the Everglades in order to cover up a murder. Local prisoners are brought in as free manpower to help fight the wild fire in the Everglades. However, when a serial killer escapes the scene, Horatio must track him down before he strikes again. Meanwhile, the body of a local college student is found shot to death and the fire has destroyed the crime scene and the evidence. However, when the team uncovers an illegal moonshine operation and homemade ammunitions in the vicinity, the CSIs uncover the real reason why the boy was out there.

A man is murdered when someone drops a piece of slate off a bridge. The team tracks the slate to one of their own and Alexx's son becomes a suspect. Then to make matters worse Alexx finds him in a warehouse holding a bloody knife over his friend who happened to be the other suspect.

When the CSIs find a woman swallowed whole and killed by a gigantic snake, they uncover a covert drug smuggling operation. Evidence leads Horatio and the team to a drug smuggling operation where large snakes are suspected of be being used to bring illegal drugs into the country to avoid detection by customs. However, when Horatio finds that Clavo Cruz, a nemesis of Horatio's who hides behind his diplomatic immunity, may be behind the operation, the team must find a legal way to put the criminal behind bars. Meanwhile, Wolfe must find the truth when two women each claim that they are the real victim of identity theft and the other is the culprit.

Miami's wealthiest appear to be targeted in a series of stabbings and robberies, and evidence leads back to Russian mobster Ivan Sarnoff, who was last seen in prison, mocking Horatio.

Two groomsmen wake up handcuffed together and covered in blood, with no memory of the raucous bachelor party the night before. Worse, the groom is missing...

As a huge tsunami heads directly towards Miami, a ten-hour warning gives citizens just enough time to evacuate the city. In the chaos, two people are killed in a parking lot and the evidence leads Horatio to discover a plot to rob a bank timed to take advantage of the evacuation. However, as the CSIs close in on the robbery already in progress, they find that it's a more elaborate crime than they previously thought. In the wake of the storm, Ryan and Alexx discover a body washed up from a local cemetery that may have a different cause of death than originally recorded. Meanwhile, Horatio suspects that Yelina is being physically abused by her boyfriend, IAB's Rick Stetler.

The CSIs investigate the brutal murder of a man who was learning how to pick up women at a hot nightclub. Meanwhile, Horatio tries to help out Marisol, Eric Delko's sister, who was arrested on drug charges.

Horatio's life is changed forever when he learns important information about his deceased brother. Horatio must now figure out what to do with this information about his brother, Raymond, and whether or not to tell Yelina. Meanwhile, the team investigates when a woman is murdered at a crowded bar after she's approached by a female employee of a service that helps men pick-up women. Also, when Delko loses his badge after some reckless behavior and it's used in a crime, he must locate the badge before it's used again.

A baby is taken from her mother's arms in broad daylight, and the team must race against time to find her.

The body of a local politician is found in an empty house. The entire neighborhood was upset that he was backing the use of eminent domain, allowing the government to force them out of their homes.

A Marine recruiter is found dead on a civilian shooting range with various bullet holes in him, but there is no blood at the scene. The investigators uncover that the victim was dead before he was shot and that his body was pulled onto the range. As the case advances, Horatio determines the murder may be tied to the death of a marine in Iraq who was killed in combat. Likewise, Natalia is shocked to learn that Nick asked Valera out and that she accepted.

A tornado touches down on a murder scene, damaging the evidence and putting Ryan and Walter in grave danger.

After a large yacht slams into a major Miami bridge, the team finds that the man steering the boat was shot and killed before the accident. The victim's wife reveals that their son had been kidnapped and her husband was handing over the ransom – three million dollars worth of jewels. But when the team learns that the jewels were fake, the investigation leads them into a dangerous situation at a jewelry shop that may contain crucial evidence, where Horatio must face the unimaginable when one of the team is killed in the line of duty.

When a suburban soccer mom is murdered, the CSIs uncover her family's dark past, while Delko continues his undercover mission.

When the mistress involved with the husband in Miami's ugliest divorce battle is found to have been killed the divorce battle intensifies and the body count rises.

Eric Delko is at the bank, following an ATM taking his debit card, when three robbers wearing ski masks rush in. Delko knows he can’t win against the three robbers but when one of them tries to rape a girl it ends in a shootout. The security tape leads them to Miami University and to the robbers next target and Horatio manages to arrest one of them. The trail leads to a videogame named “Urban Hellraisers” and when Ryan Wolfe starts playing it, it turns the similarities between the game and the actual crimes are very big. It’s up to the team to catch the robbers before they commit a crime much more serious than the last one.

A celebrity photographer is found dead in his car following an accident, but Horatio believes he was murdered. The investigation leads to an A-list movie star who was caught in a compromising position in photos taken by the paparazzi.

An inmate at a massive Miami prison complex is stabbed to death in the prison yard. Shortly after Horatio arrives on the scene, a helicopter appears above the correctional facility. He immediately fears that the murder was a decoy to set up an escape. That's confirmed as three prisoners hop aboard the chopper and flee. As the investigation gets underway, the identities of the fugitives become known and a horrible realization sweeps over Horatio: two of the escapees are cold-blooded killers who already have their next victims picked out, and the other is a child molester who he recently put away.

When pirates take over a luxury yacht, Delko's future as a CSI is threatened just as his relationship with Calleigh moves to the next level.

When a savage killer runs rampant in Miami, Horatio must intervene to stop a member of the police force from getting too close to the case.

A lawyer is run down by a car, then a man is shot down in a cafe. The only common link was that they were both caught on camera in a pedophile sting, and the team hunts for a vigilante.

When a former surf champion is murdered in his home, the CSIs are determined to find the killer. Ted Henderson is killed in his own home and his body is missing, while his wife and son are left beaten and bound. While searching the home, Horatio finds heroin in the son's room and learns that he is secretly a drug dealer. Meanwhile, the CSIs find a home pregnancy kit in the bathroom that reveals Ted's wife is pregnant, but Alexx finds proof that the baby could not possibly be Ted's. Now, Horatio and the team find evidence that suggests that someone at Ted's surfboard manufacturing plant was not only the son's supplier, but may have a strong motive for the murder as well.

Josh Dalton, a hot, young reporter for the Miami Sun, witnesses the murder of his friend, a city councilman's aide, in Miami's drug district, the Golden Triangle. Josh, who was suspiciously unharmed in the attack, claims that they were only down there on a story, but Horatio believes that there's more to the situation. Later, another writer from the same paper is found shot to death inside the trunk of her car, which was reported stolen. Now, as the evidence rejects Josh's version of what happened, the CSIs find themselves entangled in the world of fast-paced journalism and learn that there is a dangerously fine line between the truth and what sells newspapers.

A murder and kidnapping becomes personal when DNA from a crime scene reveals that Natalia’s sister Anya is one of the kidnapped women they are looking for. The team finds a safe full of photos of missing women and they must find the photographer who was using his camera to lure the unsuspecting women.

A dead junkie is found on a Miami street with a broken neck and a wad of cash in his hand. When the body is taken to the lab, Alexx notices that the victim's right hand is burned down to the muscle, even though it wasn't like that when he was found. It's deduced that he was exposed to radioactive material. The investigation leads Horatio to an environmental lawyer involved in radiation cases. Shortly thereafter, she learns that she is being eaten up inside by the deadly substance and has only days to live, but she doesn't know how she ingested it or who gave it to her.

Strange events begin to happen as the CSI team tracks down a serial killer who killed during a solar eclipse.

Local tipsters help the CSI's fight to save their neighborhood from a violent street gang's attempt to take over the area.

Delko and Alexx are nearly burned alive when they investigate the death of a hunter found shot near a supposedly controlled burn in the Everglades. The fire suddenly rages out of control and traps them, forcing them to take refuge under a tarpaulin. Later, a second body is discovered, and this time it's a young woman who looks to have been beaten to death. After bite marks are found on the victim's breasts, Horatio is led to believe a sex offender is behind the attack – and the fire.

A truck carrying weapons that were confiscated from previous crimes are now back on the streets of Miami. An old enemy of Horatio's puts the lives of two CSI's in harms way after a confiscated missile is launched into courthouse allowing Clavo Cruz to escape during his arraignment and injuring one CSI and the fatality of another CSI.

A woman is killed during a posh party at an exclusive waterfront estate when a man opens fire on the proceedings from a cigarette boat. When a former con is arrested, he acts as his own lawyer and proves to be smarter than he appears. Complicating matters is the fact that the leading witness in the case is the dead woman's 10-year-old son, whom Horatio wants to protect, refusing to let him testify.

When the team is investigating the murder of a probation officer and a hostage situation, Horatio learns that the main suspect could be his son.

The CSIs use radical technology to unlock the secrets of a man's mind when he shows up covered in blood with no memory of where he's been.

When a teen tennis phenom is abducted from her bedroom, the investigation leads to the waterways when a girl's arm is recovered in the belly of a alligator. Delko calls for an expert - his old college buddy and now alligator expert Jeff Corwin to assist.

The team investigates the puzzling death of a student and find evidence that Tim Speedle may not be dead.

Lifestyles of the rich and famous come under the CSI microscope when a wealthy family's nanny turns up dead.

Horatio heads to Los Angeles to hopefully clear Jesse's name, all while a former sports superstar is being investigated after a girl is found dead in his home...

A cigarmaker is found in his store tied up, beaten, mutilated, and murdered with a chaveta, a cigar-making tool featuring a rounded blade. The investigation leads Horatio to a group that helps Cuban refugees. Across town, a 25-year-old man is gunned down while withdrawing money from an ATM, but the motive doesn't appear to be robbery since the cash he withdrew is left behind.

When a high school bully dies as a result of a stoning, the CSIs have to find out which nerd is responsible.

Mexico's deadliest assassin is a target in Miami. Horatio's only hope is his worst enemy.

The CSIs uncover a complex counterfeiting operation after a bellboy is found murdered at one of Miami's hottest hotels. The luggage that the deceased bellboy had been loading, as well as a heist of a special paper that money is printed on, leads the CSIs to uncover a complex counterfeiting operation. It's cruise season in Miami, which means that the population of Miami swells, giving the team even more suspects to the murder. Meanwhile, Calleigh must investigate when a woman goes missing, and is later found dead, after she and her husband attend a hot and flirty "friction" party.

The CSIs uncover an exclusive hunting club where the prey is human.

When Horatio chases down a mysterious murder suspect who claims he was framed, he discovers an elaborate charade.

When a priest is found dead in his rectory after being brutally shot, Megan, Calleigh and Speedle must untangle a messy web of familial issues that lead to his death. Elsewhere, Horatio and Eric attempt to solve the emotional case of an exploded vehicle, which was home to a mother with child.

The team investigates a murder at a roller derby match.

A high stakes poker game is disrupted by a masked assassin, leaving one player dead and the CSIs baffled.

When Horatio finds another corpse with missing eyes, everything points to his nemesis, “The Taunter” – except he has an airtight alibi.

Megan Donner returns to the CSI unit in time to work on a jet crash in the Everglades. While searching for survivors, they inexplicably discover a female victim found five miles from the crash site. When the only survivor says the woman opened the plane's hatch in order to commit suicide, Horatio is suspicious. The team must now recreate what happened on that fatal flight, especially when the pieces don't quite fit together.

Horatio must protect a fighter from his brother who escaped prison.

A young man gets involved with a dangerous operation in an effort to rescue his girlfriend who's been brought to this country to work as an indentured servant...

Horatio battles the FBI and U.S. Marshals as he tries to uncover why a woman was murdered at the side of a pool at a hotel. The investigation begins shortly after the woman is found dead from two shots to the head. The evidence suggests that it was a professional hit man, which is strange enough, but the case becomes additionally puzzling when the Feds and U.S. Marshals get involved. Plus, the murder weapon is linked to a cold case that was orinially investigated by Yelina. Meanwhile, Calleigh talks to her dad about his drinking problem after she's called away from work to drag him out of a bar.

When a man claims to have dreamed of a murder before it happened, Horatio and Natalia go under cover to investigate him.

The CSIs investigate when the parents of a baby sitter in an upscale neighborhood are murdered. As the team sorts through the neighbors' secrets and lies, they find an unexpected love triangle as a motive for murder. Meanwhile, a key piece of evidence found at the crime scene leads Horatio to expose a doctor with some dirty secrets of his own.

Horatio is determined to find a family that completely disappeared.

Horatio and his team investigate after a Russian immigrant is stabbed to death in a peep-show booth, and the only witness to the crime is the stripper who was performing for him.

Horatio hunts for the man responsible for a brutal rape on a woman years back, after new DNA testing technology finds the convicted rapist innocent.

An arm in a shark's gullet and a girl who was shot at sea lead the team to a smuggler who was running Cuban refugees and cocaine in a foundering ship.

After a group of wealthy women are robbed at a luxury day spa, evidence leads the CSIs to believe that this is a part of a much larger car chopping scam and each of these women are being targeted for a home robbery. Matters become worse when Horatio discovers that Marisol was also at the spa during robbery and he must now protect her when her life is threatened. Meanwhile, Ryan must deal with the fallout after he freezes during a shootout.

The CSIs expose the seedy underbelly of children’s beauty pageants when a contestant's mom is murdered.

After an explosion at a sugar refinery information about an employee an comes to light.

The CSIs must race against time when all evidence in a murder case points to Horatio. When a murdered woman is discovered, Horatio admits that he was seeing her and that he was the last person to see her alive. Although the evidence logically points to Horatio as the killer, our CSIs must now dig deeper to find the real killer and learn who would have the motive and the method to frame him.

Calleigh and Eric are put in danger when a 200-foot crane crashes into a tall Miami building. This also destroys Horatio's best chances of catching a crime boss.

The investigation into a runway model's death leads Horatio to his son and his nemesis.

An explosion in a rundown barn nearly kills Horatio and his crew just after they find a dead man inside, bound with duct tape. The case gets personal for Horatio when he discovers that the leading suspect knew his late brother. Meanwhile, Alexx is shocked to learn that her best friend's husband has been murdered, apparently the victim of a random shooting.

After Frank steps on a land mine at a crime scene Horatio and the Bomb Technicians must deactivate the bomb. Delko gets hit with a large lawsuit after breaking up a domestic dispute.

The CSIs must investigate when a pedestrian is killed after a man falls from a building and lands on him. Horatio and the team find that the victim found on the sidewalk is not the same man who fell from the building, but the unfortunate person he landed on. The CSIs discover that the fallen victim is in possession of a sex DVD involving a top Miami criminal judge and a woman with a sordid sex life. When the woman is found dead, the team must delve into the complicated personal lives of those in Miami's judicial system in order to find the killer.

A murder case involving extreme plastic surgery leads Horatio to Ron Saris, who is alive and seeking revenge on Julia.

When the most hated man in Miami is murdered, the CSIs go on the hunt for his killer and his hidden treasure.

Horatio investigates the murder of a model intentionally run down outside of a Miami hotel by a driver who fled the scene. When the evidence leads to a suspect, governmental red tape puts an unexpected twist on the proceedings. Horatio and Yelina begin to confront their feelings for one another.

A gas man is engulfed in invisible flames and dies during a qualifying race at the Grand Prix Americas.

Evidence suggests a victim may have been set up as bait, after he's found to have been attacked and killed by a black bear. It's discovered the killer may have been trying to hide another murder - that of a high priced hooker and her bodyguard, who were part of a prostitution ring catering to elite Miami clients.

Horatio's son goes missing when a prison transport is attacked. Upon learning the identity of Kyle, he is targeted in order to get at Lt. Caine, who must find him before it is too late. Meanwhile, Ryan causes tension with his former colleagues when he is hired as an expert witness for the defense.

When a delivery truck driver and a housewife on his route are murdered, the CSIs try to find their connection.

In a deserted mansion, the CSIs find a body hanging that appears to have been killed by a vampire.

When America's sweetheart, Phoebe Nichols, bursts into flames during a concert, the CSIs expose the dark side of pop stardom.

A serial bomber is on the loose. Will the team with the help from Caine's old bomb squad mentor be able to work out the puzzle and find the bomber?

The team investigates a modern-day piracy off the coast of Miami after six bodies are discovered floating in the ocean tied together by rope. Horatio suspects that a ship was hijacked with some of the crew killed and then dumped overboard. Evidence suggests that other crew members might have escaped on a life raft. Using radar and GPS technology, the CSIs find survivors but their stories don't match. Now, Horatio and the team must learn what really happened out in the ocean as they find themselves investigating the seamy underbelly of Miami's militias and arms dealers.

Stalkers turn an innocent teenage swimming star into a sex symbol plasting photos of her over the internet. When following her it is discovered Horatio may be in danger after his testimony in a grand jury.

After a movie star is killed at a celebrity rehab center, the CSI's investigate the secrets that the star was about to reveal and if this is what caused him to have been killed.

Three volleyball players mysteriously drop dead on the court while Calleigh's testimony against Delko threatens his future as a CSI.

Horatio delves into Delko's past to find the killer who targets the motel Delko is staying at.

When a woman is murdered at an exclusive club, Horatio must search through an elite guest list to find the killer.

The team hunt for a serial killer before he can take another victim - who may be one of the team.

Deadly jellyfish are used as a murder weapon, and a mysterious woman from Jesse's past returns.

The team investigates the deaths of two college students who were in Miami on spring break. The first is a teenage girl found dead on a beach with her neck broken and human bite marks on her legs. The second is a young man found in the bottom of a hotel swimming pool who apparently died before he hit the water.

There's a serial killer on the loose marking all of his victims with a Y on their chests and one or more of the csi's lives are in danger in this season 5 finale

When gang-related gunplay goes down in an emergency room, Horatio and the team must find the gang members responsible. The evidence suggests that an orderly in the hospital recognized the wounded gang member, who possibly killed one of the orderly's friends and alerted gang members to his location. However, the evidence doesn't match up and the CSIs discover that a cheating girlfriend, not gang retaliation, may be behind the shooting. Meanwhile, Ryan questions a mother in the emergency room after her story regarding her child doesn't add up.

The C.S.I. crew try to figure out exactly how and why a passenger on a private space shuttle trip died in space after his body is found having plummeted out of the sky...

When terror suspect Sonya Barak is targeted by her own people for assassination, she goes on the run, and Horatio sets out to capture her, both to protect her and bring her to justice.

When a reality star is murdered, the CSIs delve into the scandalous, sexy world of a TV dating show.

Horatio, Speedle and Calleigh root through the evidence in the homocide of a strange, and unorthodox college professor when they find him tied to a tree. Elsewhere, Delko and Megan investigate a car found in the water with a dead body in the trunk, and immediately suspect an insurance scam.

When a reality TV star is murdered, the CSIs investigate the show's cast, the obsessed fans and the stars' hidden pasts.

The discovery of a strange murder weapon leads the CSIs into the world of gigolos.

A convicted serial killer escapes after sabotaging an airplane that was flying him from New York to Miami, where he allegedly buried a body. After fleeing the crash site, the man goes on a killing spree and abducts a college student. Mac Taylor arrives to help Horatio track the killer since Mac originally arrested the man in New York. The crossover concludes on CSI: New York S02E07 Manhattan Manhunt (II).

After a young woman is found dead shortly after she was auctioned off for charity, the team finds that the woman was trying to uncover the true nature of the event’s host. As the team delves deeper into the investigation they soon discover a larger plot that could put Miami in danger.

Memmo makes a return, bringing chaos to Miami and pitting him against Horatio in a final showdown.

When a skydiver is murdered, the CSIs discover that he has more than 100 children and all of them are suspects.

The CSIs investigate when three convicted murderers are released from prison and someone starts killing them one by one.

During a routine traffic stop, a police officer is murdered and now Horatio and the team must track down the killer. The only witness to the murder is a civilian who was doing a ride-along with the officer, but who is now missing. Roadside evidence leads the CSIs to Missy Marshall, a teenage girl who was with the killer at the time of the murder. However, as the team searches for the civilian and the killer, they find that Missy may have been more involved with killer and the shooting than she is admitting. Meanwhile, Horatio and Rebecca's relationship is in jeopardy when they don't see eye to eye on a case.

The CSIs make a shocking discovery about their murder victim, while Horatio tries to save his son from Julia's erratic behavior.

The bizarre case of a man chopped in half baffles the CSIs, while Natalia's injury puts her and Ryan in jeopardy.

When the CSIs investigate who or what caused a horrific car accident, both drivers' darkest secrets are revealed.

When the sisters of a Miami sorority are knocked off one by one, the CSIs try to end the murder spree.

When a flight attendant is murdered, the CSIs uncover all the dirty secrets of airplane travel.

After a scalped body is found near a Native American casino, Horatio believes that the owners of the Casino and the County Supervisor may have had some involvement in the murder.

A seemingly perfect jewelry heist ends in murder and when crime scene evidence is stolen from the lab, and Delko returns to find the culprit.

An escaped prisoner takes Natalia hostage and tells her a shocking secret about his crimes.

What appears to have been a horrible car accident claims the life of a woman. The evidence turns up more information and another body. During this intense murder investigation Natalia must confess a secret in order for the case to be solved.