When Allison's brain tumor resurfaces, its aftermath could have life-altering consequences for her friends and family, on the sixth season finale of MEDIUM.

When an animal rights activist working undercover at a farm goes missing, Allison befriends a pig that could hold the key to the woman's whereabouts. Also, Joe's special birthday gift from Marie leaves him wondering how she was able to obtain it.

Distressed Ariel starts to lose hours and years of time in her life and must look to her future self to figure out how to get back to the present.

After a neighbor is killed, Allison installs a high-tech burglar alarm that she thinks may be communicating with Marie.

Allison bonds with the mysterious girl from her dreams who she now must protect when the serial killer eyes the girl as the next target.

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.

As Joe and Allison's wedding is revisted, Allison tries to cope with the increasing strength of her gift.

Allison enrols 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.

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 dreams about a schizophrenic child, but when she meets her in real life, she seems perfectly normal -- but has a mentally ill roomate. Allison must determine if the child is responsible for killing her parents. Meanwhile, Bridgette develops feelings for a boy.

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 to put his daughter's killer in jail, and how Devalos' past actions may have future consequences.

The prime suspect in a serial killer case dies, leaving the police baffled. When the dead suspect contacts Allison, she learns that he's innocent. He asks Allison to help clear his name, while giving her information that may help with the investigation.

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, but his plans don't go as smoothly as expected.

After strangely becoming sensitive to light, Allison wears a pair of sunglasses that display strange numbers which may be related to people's life expectancies. Meanwhile, Allison has a disturbing health-related dream about Joe's dad.

When Ariel begins dating a boy from school, Allison has visions that indicate he may be involved in a local murder. Meanwhile, Bridgette finds herself in trouble when she is discovered posting embarrassing videos of a man on the Internet.

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

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.

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. Meanwhile, Bridgette attempts to learn how to play the clarinet, but it turns out Marie is a natural.

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, however she is soon informed that the symbols may simply be a result of he

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

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