Gus informs Shawn about the recent death of a doctor, which Shawn naturally sees as an opportunity to solve another case. Unfortunately, Lassiter is quite insistent that he does not want them at his crime scene. Shawn's consequential plans to take the rest of the day off are ruined when a histrionic man, Robert Dunn, comes to the Psych office for help. He believes that he's being haunted by a homicidal ghost and is certain that one night in his house will be enough to convince Shawn that something is out to get him.

Lassiter has his hands full enough without having to worry about Shawn. He's quite busy with relationships—that means trying to patch things with his "separated" wife and tolerating interactions with partner Juliet.