Continuity mistake: Episode 1-19, "Hot Dogs": when Keith walks in on Veronica and Weevil studying, Weevil is tapping his pencil on the table top. In the next shot, the hand holding the pencil is suddenly down in his lap. (00:01:35)
Continuity mistake: Episode 1-13, "Lord of the Bling": when Bone Hamilton shows up at the detective agency to talk to Keith, Veronica holds her hand on the couch arm rest, but in the next shot, her arm is sitting on the notebook in her lap. (00:02:40)
Continuity mistake: Episode 1-19, "Hot Dogs": in the scene where Mandy is reading "Judy Blume," she holds the book with her hands on both covers, but in the next shot, her right hand jumps to the bottom of the book's spine. (00:20:20)
Continuity mistake: In episode 1-12: "Clash of the Tritons," Veronica is in her car talking with Rick. You can tell there is no passenger seat (most likely to make room for the camera).
Continuity mistake: In the last episode of Season 2, Veronica's mum puts three pancakes on her plate but when the camera turns back there's only one.
Continuity mistake: In episode 1-12: "Clash of the Tritons," in the scene where Veronica is in her trunk, as the camera angle is on the trunk of Veronica's car, the shot right before Wallace lets her out, you can see the reflection on the trunk of Percy Daggs, III. However, the next shot is of Wallace walking up to the car.
Other mistake: When Veronica and Lilly find the camera in Echoll's guest house they show it on the ceiling fan pointing down on the bed. When they view the tapes of Aaron and Lilly in bed the camera view is coming from the cabinet and not from above them.
Other mistake: Season 1, episode 19, Hot Dogs. After Veronica bugs the Spanish-speaking man who returned the dog in the park, a shot of her laptop is shown. It's the exact same shot as when Veronica was helping the valedictorian front-runner find out who was harassing her. There are books and even the girl she was helping in the shot, proving that the shot was not in Veronica's car, as seen in the very next subsequent shot.