Continuity mistake: After speaking with the plumber at the Homicide Decision, the investigator and a colleague begin walking down a hallway and the colleague puts his hand on the investigator's arm. When this happens, the investigator has a small cup of espresso raised up to his face. When the camera changes angles, the small cup of espresso is suddenly lowered away from his face. (01:23:15)
Continuity mistake: When the investigator begins confessing to the other police officers, one of them has him eat a handful of salt. After eating the salt, tiny salt grains can be seen on his lip, and can be seen on his lip for the following minute whilst he is trying to convince them he was the killer. When he says "But I left fingerprints all over her apartment", a larger amount of salt can be seen on his upper chin that wasn't there a minute earlier. (01:45:52 - 01:46:57)
Visible crew/equipment: When the police investigator is looking for Augusta on the beach, he walks up to the shower stall area, says "Augusta", then looks back at the beach. Whilst he is looking at the beach, the reflection of the camera crew can be seen reflected in his sunglasses. (01:16:15)
Visible crew/equipment: After telling the plumber to go the police station, the police investigator is inside his car, undoing his tie. There is a moment where he turns his head around to look out the back window. Here, the reflections of two people sitting in the back seat, one being the cameraman, the other, most likely the director, can be seen reflected in his sunglasses. (01:12:24)
Visible crew/equipment: When the police investigator is speaking with the man standing outside the store window and asks him if he would buy every tie in the store, in every close-up shot of the investigator, the reflection of the cameraman kneeling on the ground can be seen in his sunglasses. (01:08:25)
Visible crew/equipment: In his car, the police investigator briefly stops in the middle of the road to put on a tie. There is a close-up shot where he begins to place the tie around his neck. In the shot, the reflection of a crew member sitting in the passenger seat can be seen reflected in the sunglasses that he is wearing. (01:12:29)
Continuity mistake: When the police investigator is speaking with the reporter after leaving the victim's apartment before getting in his car, just as he says "No undergarments were found in the apartment", the reporter is shown lowering the notepad in his left hand and has his right hand with a pen in it, placed on top of the car. In the next shot, the reporter's left hand and his notepad are suddenly placed on top of the car, writing in the notepad with his pen. The shot after that, only the right hand is placed on top of the car and the left hand is at his side. (00:25:48)
Revealing mistake: After the flashback where the police investigator tells Augusta he could murder her, and she asks him who'd solve the crime, it cuts to a man outside a store window looking into the store, whilst the investigator watches him from across the street. When this happens, two extras walk into the shot, and the extra wearing glasses can be seen looking at the camera when he walks by. (01:07:55)