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)
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 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)
