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.

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.

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.

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

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.

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 tries to find the link between Ariel's prediction of a classmate's mother's death, dreams related to her case with Cynthia, and Devalos' murder case. She also must try to keep her mother-in-law Marjorie's secret hidden from Joe.

When Joe presents his new solar power-based invention to an investment firm, he piques the interest of venture capitalist Meghan Doyle. Meanwhile, FBI profiler agent Edward Cooper claims his return to Phoenix is to track down another serial killer, but Allison's dreams tell her otherwise.

Allison is visited once again by the ghost of Agent Cooper, who tries to help her figure out who the real murderer is in a confusing case. Allison begins to question Agent Cooper's motives though and is unsure whether or not she should heed his advice.

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.

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.

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.