When Detective Grant is in the office trying to solve the serial killings; he begins talking to the "Judge" dummy that is sitting on a chair with its back turned to him. After Collins interrupts him and they both leave the office; the dummy comes to life. It turns out that the real killer hid the dummy and took its place sitting on the chair. The puzzling thing is that the film does not explain how the killer manages to enter the Police precinct and the Detective's office without being detected. In addition, why would the killer want to go there and how did the killer in the first place even know the existence of a lookalike dummy. Finally, Detective Grant has been practically living with this dummy so it makes no sense that he couldn't tell even from the back that it was a real human being there. All these factors briefly interrupted the flow of the story.