Medium: Season 3

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 gets Joe a camcorder for his birthday. But soon she starts seeing disturbing images through it that may or may not be connected to a murder.

Allison helps famous FBI Profiler with a serial killer case. Joe gets concerned when Marie starts to watch static on TV.

Allison and Ariel are starting to have dreams about a crime. They are dreaming about it from different perspectives, which reveals two suspects.

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 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.

Allison has unsettling visions about a father abusing his young son (Bryce Robinson), who in turn seeks comfort in a talking doll that may be delivering sinister messages to the child. Meanwhile, health issues rattle Joe as he takes on a looming project deadline.

Arliss Howard reprises his role as Texas Ranger Kenneth Push, who returns to Allison's life when he experiences unnerving visions about a Phoenix-based slaying. Meanwhile, Joe tells a little white lie---and suffers the consequences.

Waking up from a dream that allows a mysterious woman calling herself Sandra to take possession of her body, Allison is freaked out and sneaks out of the house. Joe seeks Scanlon's help when her new identity refuses to leave her body.

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.

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 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.

Devalos is investigating the death of one of his close friends and gets help from Allison, who's been having disturbing dreams about a young woman who appears to be possessed. Meanwhile, Joe talks with his boss to see if he can lead the company's next big project.

Time is of the essence when a disgruntled worker with nothing to lose takes Joe and three others hostage. Allison and Ariel are plagued by an overwhelming feeling of dread, as police mobilize to bring the hostage situation to an end.

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 being out in the snow, where she eventually finds a young woman's body. Joe meanwhile returns to work for the first time since the shooting, still trying to deal with the repercussions of the tragedy.

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.

The investigation of the murder of Walter Paxton's wife continues, as it is now determined that a serial killer is on the loose. While helping Devalos and Scanlon with the case, Allison discovers that her new friend Debra is the next victim. Allison goes to great lengths to protect Debra, but is shocked to find that her new friend isn't who she thought she was. Meanwhile, Joe debates being part of a lawsuit against Aerodytech, the company he's been loyal to for years.

In the third season finale, Allison's life, along with the lives of her family, is uprooted as her psychic abilities are revealed to the public. Allison must now find a way to catch the "recapitator" serial killer on her own, as she can no longer turn to Devalos or Scanlon for help.