Continuity mistake: Shawn sits on the bench behind Juliet, the shot changes, and he's suddenly moved over closer to her. (00:24:35)
Continuity mistake: When Shawn and Juliet are talking by the water the same person wearing a red shirt and hat walks behind them twice. (00:26:55)
Continuity mistake: When Shawn goes after Carlton after telling Henry he can't go fishing, there is a person walking by in the background. The shot changes and now there is someone on a bike.
Continuity mistake: As Shawn and Gus enter the office where Juliet, Carlton, and Chief Vick are sitting at the table, Carlton puts the case file he is holding on the table. Two shots later he is holding the file again, and for the next few shots his hands keep changing position without time for him to move them.
Continuity mistake: After Shawn's dad and Carlton talk, Shawn has a shirt on his shoulder that changes how it is positioned between shots. At the same time an extra is seen walking behind them twice.
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.