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.

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

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.

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.

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

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

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.

When the investigation of a dead millionaire leads the CSIs to an elite dating service, Ryan poses as a wealthy businessman to expose the matchmaker's lies.

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

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

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.

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.

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

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.

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

Eric Delko returns as an expert witness for the defense, pitting himself against his old team.

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.

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....

When a neighborhood do-gooder is murdered, Horatio and the CSIs discover that he was planning to blow the whistle on something big.

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.

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.

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.

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.

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

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 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.

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

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.

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.

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.

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...

In the season finale, Horatio must capture an escapee again when their transport plane crashes. And the team was shocked to discover that the fugitive has planned more than that.

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

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.

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

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).

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.

The CSI's are called out to investigate the murder of a young woman who was about to sign her divorce papers. Soon the husband turns out to be the ideal suspect. The only strange thing about the case is the murder weapon: a nailgun. The case becomes complicated when one of the CSI's is attacked when he returns to the crime scene and ends up in hospital.

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.

On the 200th episode Horatio must find an attacker and save a pregnant woman and hope he has an idea as to why she was attacked.

When a man is killed due to a fake 911 call, Horatio must face off with a private investigator who is systematically destroying the team. The PI also digs into the team's personal lives and gets both Calleigh and Eric pulled off the case.

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

When the man who killed Horatio's wife breaks out of prison and goes on a rampage, the team tries to determine what he is after.

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 serial killer is on the loose with a craving, making Calleigh its next victim, which also jeopardizes her ability to do her job.

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 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.

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.

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 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.

Calleigh and Ryan come close to being murdered while investigating a home in which they find the corpse of a doctor who's been performing illegal transplant operations in his garage...

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

After an accident where the driver was decapitated during a dangerous stunt, the evidence leads the CSI’s to believe it was more than an accident. While gathering the evidence, the CSI’s find they must go into the world of “sideshows.”

Horatio hunts for the person responsible for a vicious attack on a woman who was lured to a vacant condo and beaten with a piece of lumber.

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

The team must figure out why a fisherman is being targeted and keep him from being killed.

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

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

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

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

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.

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

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

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.

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

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

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

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.

Horatio is determined to find a family that completely disappeared.

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...

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

The team investigates a murder at a roller derby match.

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.

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.

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.

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.

A rare and illegal machine gun that 'vaporizes' its victims is let loose on the streets of Miami.

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 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.

A victim's spirit won't leave Calleigh alone until she finds justice for his murder.

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

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

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 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.

Someone uses a laser light to blind a pilot and bring down a jet, which carries $1.2 billion in checks to be delivered to banks on the eastern seaboard. The crime scene evidence reveals a victim, a young fundraising socialite, who was inside the plane but killed prior to the crash. Now, although the team has little to work with since the victim's wealthy family is opposing an autopsy, Horatio must follow the money trail. Meanwhile, Calleigh works on the case with her ex-boyfriend, Detective Hagen, and their romantic history could cause problems for both of them.

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

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.

An eccentric genius is assassinated with the most unique weapon the CSIs have ever seen.

When a woman is killed in what looks like a carjacking, the CSIs talk to her husband, the oldest of the three brothers who run their lucrative family business. However, when it is revealed that the victim had a gambling addiction that could have bankrupted the company, the team must follow the evidence to find the killer. Meanwhile, Alexx hires a recovering alcoholic as a body hauler and must investigate when he is accused of stealing from the dead.

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.

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 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.

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

Horatio and Natalia's lives hang in the balance, as Horatio stands between Natalia and certain death. Meanwhile, it's a race against time for the team to capture escaped killer Jack Toller before he kills again.

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.

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

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.

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

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

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

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.

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.

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.

The search of a missing 17-year-old girl, whose trip to Miami turns into an ongoing nightmare.

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

The two young owners of a city bar are gunned down after hours and another man is wounded in the attack, which was allegedly committed by a masked gunman. Meanwhile, Calleigh's dad announces he is now a public defender and needs her help with a murder case in which a woman allegedly stabbed her boyfriend to death in his car with a screwdriver.

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.

The team investigates the death of a young model, whose body was found near a juvenile detention camp for girls. Across town, Delko and Speedle probe the bizarre death of a man who was apparently burned from the inside.

The murder investigation of a sports legend has complications when his body is lost by the lab.

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...

An extreme skateboarder and videogame tester is found dead on a half-pipe platform used to program extreme skateboarding video games. The CSIs discover that he was wearing reflective sensors when he was killed, so the motion-capture device used to produce these videogames recorded the murder as it happened, but not the murderer. Now the team delves into the highly competitive world of videogame programmers and testers to find the killer.

The evidence on who shot Horatio leads the team to some of most Miami's dangerous including one of their own.

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).

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.

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.

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

Handcuffed, a man is found in his own hotel room. Meanwhile, a prank at the Crime Lab threatens an investigation.

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

The residents of Miami are killing each other after gas prices skyrocket and the CSI team encounters Miami's most brutal crime ring yet.

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

Alexx Woods and Eric Delko return to help the CSIs stop a deadly outbreak in Miami.