Allison investigates the supposed suicide of a girl who was dating D.A. Larry Watt's son Greg. When the girl's body is found in a ravine, new evidence is presented that implicates the defense attorney. Meanwhile, Joe is concerned about one of his colleagues after Allison has a premonition of the colleague having a heart attack.

Allison seeks Catherine's (the psychic she talked to in "Pilot") help after learning that Joe has scheduled a biopsy exam. The psychic gives her a strange message that later comes back to haunt Allison. A case about the homicide of a police officer takes a shocking turn when Allison dreams where the murder weapon is located and is then called to the stand to testify how she obtained the information. Meanwhile, Allison fears that Joe is having an affair when he repeatedly comes home late from work.

Allison dreams that she's a woman who's been committed to a mental institution in 1959. After viewing taped sessions from the clinic, Allison discovers that the woman from her dream had made claims of being Allison DuBois, living in 2005.

A young deaf girl is kidnapped, causing Allison to completely lose her hearing. With Allison at a loss, Joe decides to help her and Cynthia Keener investigate the kidnapping.

After Alison has a terrible dream of her soldier brother dying, she gets a surprise at her front door. Meanwhile, Allison and Devalos work on an arson case and Allison has trouble getting information from the ghost of a young girl who died in the fire.

A serial killer from the past begins to possess people so he can kill again. Allison races against the clock to save his next victim, but she becomes a target in the process.

Allison investigates the case a woman's murdered husband. Meanwhile, her brother Michael gets a job as a telephone hotline psychic which leads him to visit a distressed customer in Arizona - the same customer whose case Allison is investigating.

Allison has recurring dreams of her past, causing strange and shocking changes to her current life. Her dreams of the past threaten her life in the present as she tries to stop a predator before he strikes.

Allison's daughter Ariel dreams that she is a young girl named Sarah being held captive by an ogre in a castle. While Joe agonizes over the possibility that both of his daughters have inherited their mother's psychic abilities, Allison tries to help Ariel and interpret the dream. However, Allison's advice provokes Ariel to run away from a field trip in order to follow up a clue.

Allison has a dream of a husband and wife committing a murder/suicide. D.A. Devalos introduces her to a friend of his, Detective Lee Scanlon, who's sister and brother in-law's deaths were also ruled a murder/suicide, and sees a connection. After learning about Allison's methods of investigation, Scanlon decides he doesn't want her help.

Allison meets Meghan Doyle, Joe's new business partner. Meanwhile, her old car stops working and Joe surprises her with a nice looking used car. The car ends up being the center of a horrible unsolved crime though.

When a case from ten years is re-opened, Allison finds herself in a chaotic situation. Things continue to get messier when Allison finds out that the convicted man is innocent, and that someone she knows and trusts may have been involved in his framing.

Allison believes that a paranoid schizophrenic girl was framed for her parents' murder years ago. Meanwhile, Bridgette suffers through the agony of her first crush on a guy friend.

Joe brings a reluctant Allison with him to a party at a prospective employer's house. Later on, the employer's daughter disappears, leading Allison to connect her recent dreams about Paris to the disappearance. Now it's up to Allison to save the daughter, which coincidentally will also secure Joe a job.

While Capt. Push lingers between life and death, Allison struggles to decipher confusing messages from the other side in an attempt to stop a serial killer before he claims his next victim.

Allison runs into the man who kidnapped her daughter in one of her dreams at the District Attorney's office. She learns that he is a "Good Samaritan" who witnessed a robbery and is fully cooperating. After learning that he has kidnapped multiple young women, Allison reaches a roadblock in her investigation that leads her to yet another unbelievable breakthrough in the case. Meanwhile, Joe tutors Ariel in math, which in turn brings Allison to another shocking discovery.

Allison is called to help Devalos investigate the shocking death of a well-respected assemblyman, but for some reason she has visions of a young boy trapped in a well mixed in with her visions of the assemblyman. She must figure out what the dreams of the young boy mean because the dreams of the assemblyman alone aren't enough for her to solve the assemblyman's death.

Allison tries convincing Devalos that she heard a witness misinforming a police sketch artist, making them look for the wrong man. Meanwhile, 6-year-old Bridgette's new playmate indicates that another member of the family can see the dead.

While Allison is coping with Joe's job relocation to San Diego, she dreams about and then subsequently meets a bank teller named Mrs. Boddicker who predicted a robbery at her bank.

Allison's recent habit of sleepwalking keeps landing her in dangerous situations. This leaves her exhausted while she hurries to solve a kidnapping case before it's too late.

Allison is lead to an art gallery where she encounters the art of a popular artist. While looking at some of his paintings 3-dimensional images emerge that make her believe that the artist is somehow involved in a crime. Joe gets a job offer from a former co-worker. – this episode is partly in 3D

Allison and her daughters dream of the same mysterious girl who may be linked to the bizarre serial murders of entire families. Joe and his boss find themselves at odds while working on a major project.

All outside noise is drowned out as a popular song is continuously played very loud, and only in Allison's head. The song gives Allison clues to the whereabouts of a missing coed.

While working to locate a missing local girl, Allison learns about secrets from Cynthia Keener's past. Meanwhile, Joe's relationship with Allison is tested after Bridgette's science class project sparks his imagination.

Allison has a vision that could jeopardize D.A. Devalos' chances for re-election. Meanwhile, Joe runs into an ex-girlfriend from college.

Joe tries to prove that Allison's dreams are stress related by sending descriptions of them to law enforcement agencies. However, when one of her dreams matches a homicide in Texas, his attempt is thwarted.

Evidence shows that a pilot is indeed guilty of his wife's murder. However, in Allison’s dream, when the pilot is put in jail, there is a plane crash where hundreds of people are killed. Should Allison put forth the evidence to land this guilty man in jail, or let him go free in order to save hundreds of innocent lives?

Allison's recurring dream about two young boys racing a train is analyzed by Dr. Leonard Cardwell, but Allison soon learns that he's involved. Devalos investigates the case of a 14-year-old who confessed to murder.

Allsion had a dream that takes place about 20 years in the future in which Marie dies of leukemia. Upon waking up Allison is determined to keep Marie safe no matter what needs to be done. Joe strongly disagrees with Allison's actions, and tries to convince her to stay rational. Meanwhile Scanlon investigates the sudden death of a close friend.

Devalos tries to reclaim the D.A.'s office. Allison's support of Devalos is tested when she has visions of Senator Jed Garrity, Devalos' strongest political supporter, involved in a horrible conspiracy.

The girlfriend of a convicted drug lord is killed on the night of his execution. The drug lord's ghost is seen at the crime scene, and Allison is brought in to investigate. Also, Allison discovers a dark secret about the mother of a boy that Ariel has a crush on.

After falling into a coma during an investigation, Allison's spirit finds it's way into the body of a man named Todd Emory. Joe and the kids have to adjust to living with Allison's spirit in the body of Todd, who insists on living with them.

Allison encounters a psychopathic doctor who raped and murdered numerous teenage girls years ago. After learning that an evil soul has been possessing people, she sets forth to stop it before a new victim is found. Meanwhile, Ariel's math teacher accuses her of cheating and Joe steps up to her defense.

Allison questions her powers when her old boss asks for her help in selecting a jury that will reinstate the death penalty for a murderer/rapist. This causes Allison to suspect that she has helped put the wrong man on death row.

When Allison's car is wrecked, the SUV she rents turns out to have some unusual features, including a satellite radio that allows her to hear other people's conversations.

Allison is confused when her dreams of a man murdering his wife keep occurring, even after she helped Devalos convince the jury of the suspected killer's guilt. Through her troubles she manages to make a new friend named Debra. Meanwhile, Joe is frustrated by the therapy sessions that his job enrolled him in, and can't express his feelings to Allison because the recent hostage situation he was in is still greatly affecting him.

As Allison teams up with Scanlon to track down the dangerous "cougar" they believe is responsible for the murders of young men, she also has visions that Devalos' campaign is in jeopardy, with someone plotting against him.

A horrific apocalyptic dream has Allison shaken, as does the earthquake which follows. Convinced that the end is near, Allison seeks wisdom from a survival guru and purchasing provisions. Meanwhile, Ariel has a crush on a upperclassman who needs help with his geometry class

Odd things occur for Allison, starting with her new sensitivity to light and the fact that the sunglasses she wears shows mysterious numbers that can tie into people's life expectancies. Like that wasn't enough, Allison has a dream about Joe's dad, causing Joe to begin taking better care of his health.

Allison gets a minor concussion when slipping in the bathtub. When she goes to get an MRI she has a strange vision about a man she just met.

Allison believes she is having after effects from her recent brain surgery after experiencing strange symbols as visions. However, as the story plays out, it seems the symbols may be the key to uncovering the true identity of a serial killer.

Allison wakes up under a freeway overpass, not knowing where she is or how she got there. Her lack of recent memory causes her to start thinking she may have killed someone with her car.

Allison fears the worst about Ariel's new boyfriend when she suspects him of murdering a man. Also, Bridgette posts embarrassing videos of a man on the Internet and gets into trouble.

Allison dreams about the same day over and over again. Each time she finds more important clues. Joe tries to get affection from Allison. Ariel has problems at school.

Allison has visions of a friend of Scanlon and Lynn DiNovi dying in a home mishap. This causes her to struggle with connecting some recent "accidental" deaths, consequently putting her own health in jeopardy.

A series of mysterious fire-related deaths may be tied to Allison's dreams of a blaze. Allison must also think about where her professional career is headed, as Devalos starts thinking seriously about running for mayor.

On the 100th episode of Medium, an infant is kidnapped and Allison investigates the disappearance. But when she becomes too obsessed with the infant, Joe starts to get worried about her. Meanwhile, Bridgette and Joe are surprised after Marie manages to play the clarinet without any issues even though she hasn't attended any classes, while Bridgette is struggling to play.

While working on a 17 year-old-crime, Allison exhibits unusual behavior that may be pivotal in solving the case, but at the same time puts her family at risk. Meanwhile, Joe's dinner invitation to a colleague yields surprising results.

Allison investigates when a brother and sister report the disappearance of their mother. Meanwhile, Joe's sister moves in with Joe and Allison after walking out on her husband Ryan, but Joe's father has advice from beyond the grave about her relationship.

Allison teams up with a dead man to help solve a case, only to realize she's been hoodwinked.

Allison struggles with her decision to switch jobs. When continues to have visions about a serial killer she is forced to choose between honoring the contract with her new job and sharing her information with the police.

Allison is busy investigating the death of a local doctor when a man claiming to be "Death" begins appearing in her visions, causing her to worry that maybe her time on this world is nearly over.

Three girls are found murdered. Allison's visions connect Det. Scanlon with the case.

Allison tries to help investigator Cynthia Keener find a missing teenage girl. Meanwhile, Ariel dreams of Allison's high school days from the 80's after being asked out to a concert without any chaperones.

Scanlon is haunted by dreams of his late brother, leaving Allison concerned about her colleague. Also, while making her final preparations for college, Ariel has visions of missing young women, past and present.

When Allison gets a skin graft on her hand after a burn, she is puzzled when the same hand acts with a mind of its own, gesturing uncontrollably. Also, Bridgette keeps her real role on the soccer team a secret from her parents.

Allison repeatedly dreams about a woman who is being watched by a stranger in her bedroom.

Allison's dreams question her brother's recent good fortune; the Devalos campaign sees Bridgette as an asset.

After a neighbor is murdered, Allison's fears for her own family prompt her to install a high-tech talking burglar alarm, which she later suspects may be communicating with Marie. Also, Ariel meets a ghost who could help her get into the college of her choice.

Allison dreams about a strange friendship between two recently murdered ghosts. When she tries to help one of the ghosts solve his murder, she is surprised when he declines her help.

After Allison is mugged, she decides to take charge by enrolling in self-defense classes. Also, Devalos investigates a teenager's rape and an undercover cop's possible murder, and the suspect may have very close ties to Scanlon.

Allison's old flame, Clay Bicks, appears at her doorstep moments after dying, unaware that he is dead. When he accepts the fact that he's dead and will never get to be with the woman he loved, he decides he's going to stay in Allison's house so he can at least be close to her. This upsets Joe, and Allison decides that something must be done to get rid of Clay. Meanwhile, Allison shares a bunch of odd dreams with Bridgette, except Bridgette's dreams keep coming to her in the form of cartoons for some reason.

Allison helps with the location of a missing child. Afterwards she gets a vision about the child's future and is not sure anymore what she should do to help the child.

Allison is asked to help find a missing daughter and her visions seem to incriminate her father, but Allison believes this is wrong after a chat with the woman's mother. Meanwhile, Joe is suffering from sleep deprivation, while Scanlon and Lynn's relationship is severely tested.

Allison can't get a psychotic murderer out of her head which makes Joe worry about his daughters' well-being.

The psychic killer from "S.O.S." escapes from prison, where Allison helped put him, and goes after Allison in her own house.

Allison has problems with staying impartial about a case when she develops maternal feelings for a teenage boy who is accused of killing his former boss. Bridget finds a stray dog and want's to keep it.

Allison dreams that her brother was involved in a local bank robbery. Her suspicions grow when he unexpectedly shows up in town and gets involved with a con woman.

Larry Watt, a defense attorney who has caused trouble in Allison's past, asks Allison to be a consultant for him. Low on money, Allison accepts his offer. She later has a dream that his client murdered his wife.

Allison’s possessed stalker, Lucas Harvey, continues to torment her by infiltrating her dreams and causing her to be less than reliable to Devalos and Scanlon during an investigation of serial killings. Meanwhile, Joe tries to use Marie's new gift of picking the right stock as a way to save his company.