Allison has dreams that help Scanlon in his search to find out who killed a wealthy local drug dealer. Allison and Scanlon are dumbfounded when Allison's dreams lead them to a severely impaired man with a bullet stuck in his brain. Meanwhile, Joe's partnership with Meghan Doyle is put in jeopardy.

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.

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.

Allison comes face-to-face with her stalker from her dreams. He believes he is doing God's work and must stop her. Allison and her family must remain under house arrest until they capture him. Meanwhile, Joe agonizes over whether or not to make a big gamble that could potentially save his company.

Allison’s possessed stalker, Lucas Harvey, continues to torment her by infiltrating her dreams and causing her to be less than reliable to Devalos and Scanlon during an investigation of serial killings.

Meanwhile, Joe tries to use Marie's new gift of picking the right stock as a way to save his company.

Allison turns to Cynthia Keener (who is now in jail) when she starts dreaming of a former kidnap victim who Cynthia had once rescued.