Medium

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.

Allison becomes worried after Ariel starts to display strange behavior, and begins to think that a murdered stripper may be possessing her.

When Allison's friend with cancer suddenly dies she suspects a hospital employee may be at fault. Meanwhile, Bridgette writes a story that closely follows what later happens at Joe's job interview.

Allison is perplexed when she begins to see visions of strange symbols. When a serial killer strikes Phoenix, she discovers that the symbols could be clues to capturing the killer.

In the 100th episode, an infant is kidnapped from Allison's neighborhood, and she becomes so determined to find the child that Joe fears she may have become obsessed.

Allison's nightmares put her in scenes from the classic movie Night of the Living Dead, and cause her to awaken with strange bite marks and cuts, as well as clues related to the murder of a funeral director.

Allison rents an SUV after her car gets damaged; she discovers that the SUV's satellite radio lets her hear other people's conversations.

When Ariel begins dating a boy from school, Allison has visions that indicate he may be involved in a local murder.

When Allison's eyes become sensitive to light, the sunglasses she wears display numbers that might reveal people's life expectancies.

Allison's visions become a vital source of information to the authorities after samples of a deadly disease disappear. Meanwhile, Scanlon thinks he's ready to ask Lynn to marry him.

The prime suspect in a serial killer case dies, and the police are convinced he's the guilty party. When the dead suspect contacts Allison, he tells her that he's innocent and agrees to help her find the real killer if she will agree to help him.

As the anniversary of Devalos' daughter's death come to pass, Devalos is haunted by memories of the traumatic event. Meanwhile, Allison has dreams of the extreme measures Devalos went to put his daughter's killer in jail.

Allison meets a girl from her dreams and questions whether this once-troubled person could have been capable of killing her own parents.

Allison keeps seeing the face of one man in the faces of other people, including Joe, and must figure out why. Meanwhile, Ariel has a difficult time babysitting a mischievous boy.

Allison enrolls herself in self-defense classes. Meanwhile, Devalos works on a teenager's rape case, as well as looking into a suspected murder involving a police officer.

Viewers get a look back at Allison and Joe's wedding, and how the growing strength of Allison's "powers" affected the soon-to-be-married couple.

Allison and her daughters share the same dream of a strange girl who may be linked to a string of murders. Meanwhile, Joe has another disagreement with his boss.

Allison discovers that the strange girl from her and her daughters' dreams is the serial killer's next target, and she must protect the girl from danger while also trying to work with her to catch the killer.

Allison installs a high-tech talking burglar alarm after a neighbor is murdered, which she later discovers might be communicating with Marie.

Ariel somehow loses years of time in her life and must find a way to get back to the present.

Allison's friendship with a pig could lead to the whereabouts of a missing animal rights activist. Meanwhile, Joe gets a special birthday gift from Marie.

In the sixth season finale, Allison's brain tumor returns, which may prove to have major consequences for not only her, but her loved ones as well.