Continuity mistake: When Claudette, Danni, Julien and Wagenbach are at the overturned churro cart crime scene, Claudette is seen pulling a pair of white gloves from her pocket. The gloves then disappear from her hands in a wide shot of her talking to Julien about the crime scene, but reappear in the next shot.
Continuity mistake: After Vic and Shane try the "smoke-out" and the suspect flees, Vic begins chase. When the suspect is climbing a wooden gate to escape Vic, Vic crashes through the gate and tackles the suspect. Watch as Vic crashes through the gate, the gate swings open to its left, is intact, and still attached to its hinges. In the next shot Vic and the felon have both landed on the gate, which somehow is underneath them both. Also, when Vic falls, he falls on the victim's right side with their backs facing toward the camera. After the shot change, they are now on the gate, and facing opposite to how they should be.
Continuity mistake: When a father and his son are in the interrogation room with Vic and Claudette, the father starts hitting his son after realising he was involved in drugs again. Vic begins to intervene, and is seen behind the son with his right arm over the son's right shoulder. He begins to pull the son away to their left, when suddenly Vic is in between both father and son with his arms spread out, keeping them apart.
Continuity mistake: When Claudette questions Wagenbach's motives for helping Danni with the Sergeant's exam, she is flicking through some papers with both hands. As Wagenbach walks behind her, her hands are now occupied with a pen and a half eaten sandwich. This transition happens almost instantly.
Continuity mistake: In the scene where Mackey is cooking a BBQ during his family's pool party, keep an eye on Ronnie (who is mainly to the left of the screen, wearing a burgundy polo and khaki shorts). When Vic is asked whether his son could keep a spider in his room, Ronnie squats behind a woman and hands her a drink. When Vic wife then says "if that thing gets loose" Ronnie is shown handing the woman the same drink. Also about a minute after this, when Terry is telling Vic about how he wants to join the team, over the duration of their conversation, Ronnie is seen squatting beside the same woman three times in a row.
Audio problem: When Mackey is interrogating Leon the camera is pointed at Mackey as he asks Leon "why are you and the other shop owners all telling the same lie?" The camera then switches over Mackey's right shoulder so we can see Leon's reaction to Mackey's question. Look closely at Mackey's mouth in this shot, you can see him mouthing the exact words that he just spoke.