Continuity mistake: Just before Gus is awoken by noises in his apartment, there is a shot of his alarm clock. The time shows 6:07PM. When he gets out of bed, the clock says 7:01 (cannot determine if it is AM or PM). Even assuming he just lay in bed for an extra hour, he then tracks down Lassie who is about to eat lunch. (00:27:00)
Continuity mistake: At the end of the episode when Shawn and Gus are at the new Psych office, Shawn puts some scissors in a cup with pencils. The shot changes and the scissors have changed position.
Continuity mistake: During the first scene in Gus' office the door is open in some shots and closed in others.
Continuity mistake: When Shawn sits down next to Juliet at the restaurant he is holding his drink - the shot changes and the drink is now on the counter.
Woman Seeking Dead Husband - Smokers Okay, No Pets - S1-E4
Continuity mistake: When the bank robber enters the mausoleum, his hands are empty. When Raylene points her gun at everyone, he raises empty hands. After Lassie and Juliet arrest David and Raylene, the bank robber is holding a slushie cup. (00:36:40 - 00:37:30)
Continuity mistake: When Shawn sees the box with the dead doctor's files, Regina Kane's file is visible halfway back in the box. He then tells Gus, "All we have to do is find Regina's." (Which he was looking straight at, but let's call that a character mistake.) A few moments later, we cut back to Shawn and Gus and Shawn finds her file in the front of the box. (00:37:00 - 00:37:40)
From the Earth to Starbucks - S1-E10
Continuity mistake: As Shawn and Gus walk up the stairs to the courthouse, there are only two men standing beside the steps, at the fence. The camera angle changes and there are three completely different people standing there. (00:01:15)
He Loves Me, He Loves Me Not, He Loves Me, Oops He's Dead - S1-E11
Continuity mistake: When Shawn and Gus are back at the office after the sorority ghost sighting, Gus talks to Sean from his desk. Shawn is just on Gus' right and Gus' head is turned slightly towards him. The camera angle changes and Gus is turned left (Shawn has not moved). Then Gus is again looking left. (00:16:40)
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.
Continuity mistake: A man attacks the judge by running out of the shower. When he runs through the shower, a shower curtain is draped over him. For most of the scene it is over his head, but when he is dragging the judge into the shower, the curtain has moved off of his head and is even gone completely in one shot, perhaps to make the actor more visible.
Continuity mistake: When Shawn, Gus, and Nigel are having dinner over at Henry's house, Shawn's plate already has a steak on it before Henry walks in with the first batch. Then, the steak disappears right before Henry plops one on Shawn's plate.
Continuity mistake: When Carlton is talking to the judge, the match in his mouth changes from the left and right throughout the scene.
Psy vs. Psy - S2-E3
Continuity mistake: When Shawn kicks over the carry-on bag at the end, it lands with the handle on top. The subsequent wide shot shows the bag with the handle on the bottom. The handle is back on top just before the bag is opened.
Psy vs. Psy - S2-E3
Continuity mistake: Shawn and Gus are in front of the Psych office talking about how the other psychic beat Shawn. There are two guys standing in the background, then in one shot there is only one, the next shot there are two again.
Zero To Murder in Sixty Seconds - S2-E4
Continuity mistake: When Shawn and Gus find Johnny G's body in the car, he's slumped forward in the shots inside the car but slumped back in the shots seen through the windshield.
Meat Is Murder, But Murder Is Also Murder - S2-E6
Continuity mistake: The people in the background change in the overhead shot at the end of the episode when Gus walks away from Shawn. (00:41:55)
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.