A shocking and brutal conclusion awaits Allison and Cynthia as they delve into the decade-old case of the kidnapping and murder of Cynthia's daughter. Meanwhile, Joe tries to get funding for a new invention and Bridgette predicts good fortunes for her dad.

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.

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.

A distressed Ariel begins to lose hours and then years of time in her life and must look to her future self to find out how to get back to the present.

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 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.

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.

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

Allison dreams of the life she could have had if she'd become the attorney she originally wanted to be.

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 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 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.

After somehow seeing Capt. Kenneth Push in a vision at a murder scene, Allison calls upon his assistance to find a serial killer. However, the only way Capt. Push can help is by literally putting his life on the line.

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.

Allison and her family deal with the outcome of her brain surgery and its possible lasting effects. Also, a local television station owner asks Devalos and Scanlon to look into the possible stalking of his sportscaster, who is also his wife.

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 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.

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.

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.

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.

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.

Now that Allison's special abilities have been revealed to the public, everyone's lives have been turned upside down. Allison starts to have dreams about a boy who was kidnapped from a toy store, but is unable to turn to Devalos or Scanlon for help. She decides to call the company hired by the missing boy's family and makes an unusual deal with the company's investigator, Cynthia Keener.

In the fourth season finale, Allison tries to help a young couple who thinks their house is haunted, but her efforts result in murder. Meanwhile, Meghan Doyle tries to sell her controlling interest in Joe's invention and Joe tries to save his own stake in it. Also, the election between Devalos and Tom Van Dyke takes place.

Delavos receives help from Allison when he investigates the murder of his friends sister. But the case is taken into an unexpected direction when when Allison's visions involves the friend's former husband and current spouse. On the domestic front, Bridgette finds herself in trouble at school when she is caught drawing pictures of her teacher in the nude.

Allison dreams of a ghost who was a witness to several murders. Meanwhile, Ariel has a strange reaction to an assignment in health class.