Revealing mistake: In the second of two cases, a man who shot and killed his girlfriend is stopped by police. He is shown pointing his handgun out of the car window, but it is obvious that the barrel and recoil spring assembly of the gun have been removed. (00:41:03)
Continuity mistake: Chris has a blue dye pack explode on him, covering the front of his clown costume and face. But then shortly after, the dye is gone from his face and clothes.
Episode #1.4 - S1-E4
Other mistake: Dr Ambrose, talking about a doctor tending to patients on death row, says "Hippocrates is spinning in his grave." The subtitles say "Hypocrites is spinning in his grave."
Misty's Magical Mix-Up!/Bone's Lucky Doubloon - S2-E31
Other mistake: In the episode "Bone's Lucky Doubloon," Captain Hook, Smee and another pirate are washed downstream, go over a waterfall and land in a lake. When they emerge from the lake, no water is dripping from them.
Episode Six - S4-E6
Continuity mistake: When Beverly and Carol are walking through the park, Carol begins having a conversation on her phone and Beverly begins to mimic what she is saying. Whilst this is happening, in the far background, there are two people shown walking in the opposite direction and also a man walking in the same direction as Beverly and Carol. As the shot ends the man is far past the other two walking in the opposite direction. The shot then changes and the man walking forwards and the other two people walking in the opposite direction walk past each other a second time.
Visible crew/equipment: When Ally kicks Austin out of her practice room the shadow of the boom mic can be seen on the wall.
Continuity mistake: When Josh has got out and they go looking for him, they find Aiden on a small bridge. From a distance he's got a very dark sweat stain on his shirt. In a closer shot it's faded to nearly nothing, and gets lighter/darker in different shots throughout the scene.
Continuity mistake: When Irina meets XIII on the river dock, she leaves her car, closes the driver side door and walks to XIII. Moments later, when XIII is shot, she runs back to her car, where the door is wide open.
Now or Never - S1-E2
Continuity mistake: When Amy picks up her book from the trash her thumb is on the front cover. When the camera cuts and she hands the book to her co-worker, her thumb is on the back cover.
Continuity mistake: In the scene where Cricket is cutting out clips of the Bill Vaughn scandal, she places the one clipping into the binder on top of another, then in another shot, the new clipping is no longer there, and she places that exact same clipping into the binder again.
Revealing mistake: When Mr. Goodman blows his nose, you can see a little pink from the makeup on his nose (to make him look sick).
Continuity mistake: When the detectives are in pursuit in the alley, they are followed by a police car. In all shots from the front it has its blue lights on, while they are off in all shots from the rear.