Character mistake: When Gus goes to check the source of the creepy phone call, he finds Shawn who immediately ends the call before saying anything. Later in the episode, Haversham says he heard Shawn say "Gus?" before ending the call.
Psych (2006)
Episode list - season 7
Starring: Corbin Bernsen, James Roday, Maggie Lawson, Dulé Hill, Timothy Omundson
More mistakes in Psych
Shawn Spencer: The spirits tell me your little pants are on fire.
Trivia: There is a scene where Shawn, Gus, and Vivian are sliding in an open hallway trying to hide from the orderly who is taking Bernie on the elevator to his lobotomy at the mental facility. The scene is a total re enactment of The Breakfast Club movie scene where Molly Ringwald, Judd Nelson, Emilio Estevez, Ally Sheedy, and Anthony Michael Hall are sliding in an open hallway trying to hide from Dean Paul Gleason when they broke out of detention. Molly Ringwald guest stars in this episode too. (00:34:15)
More questions & answers from Psych
Chosen answer: "Psych: The Musical" was supposed to air during the regular season 7 schedule, before Chief Vick is suspended and Jules discovers Shawn's lie, but the network decided to push it back to air as a special episode, sort of as a tie in with the holiday season and a lead in to season 8, which was to begin only a couple of months later.