Hangman goofs

The control room summons Detective Ruiney to Bancroft Primary, where he discovers a body; later, when speaking with Detective Archer, he refers to it as Wayward Primary.

Dr Westlin repeatedly records asphyxia as the cause of death after only a brief inspection of the bodies. Even if the victims appear to have been hanged, a physician would need a far more thorough post-mortem to be certain of the actual cause — for example, someone might have suffered a heart attack while suspended. In addition, hanging can result in several distinct mechanisms of death; a doctor must distinguish between a lack of oxygen because the person could not breathe and death caused by blood flow to the brain being cut off. While a doctor or coroner might offer police provisional opinions, they would not state a cause as unequivocally as Dr Westlin did.

During the pursuit of the dirt bike, the Charger police car switches from an early model with square rear lights to a later model fitted with racetrack-style rear lights in the alleyway at the end of the pursuit.

During the opening chase sequence, the front number plate on Ray Archer's car briefly disappears and then reappears.

In the train sequence, Christi's scar appears on the opposite side of her forehead and slopes the wrong way.

At 1:51 in the foreground a woman wearing beige trousers is carrying a bag and a large takeaway coffee; a chase unfolds in the background. Then at 2:00 the same shot is shown again with different editing, and the background pursuit passes by once more.

In the mausoleum scene where Jimmy was streaming live via his camera, he tossed it onto the floor while talking to Archer. A moment later, as the police at the station watched the live feed, her face was shown clearly at eye level — which would have been impossible for a camera positioned on the floor.

Detective Archer removed the watch from the second victim at the Coroner's office and handed it to the Coroner, asking them to dust it for fingerprints. In reality, fingerprinting, bagging and logging of the item would be carried out by the police forensics team at the scene, who would have secured and recorded it as evidence well before the Coroner ever received the body.

When Al Pacino referred to the food dye stamp on the pig's head, he said "The FDA stamps pig heads with a code number in case of disease." The stamp itself is genuine, but the FDA regulates only processed or adulterated foodstuffs, not fresh meat — that responsibility lies with the USDA, the United States Department of Agriculture.

In the chase sequence, the Honda motorbike is in fact an off-road bike fitted with a headlamp.

When Ruiney and Archer propose checking the list of criminals they had arrested, an officer explains they had taken a few dozen into custody the year before, but only five had been released from gaol in time to have carried out the hangings. Despite this, Ruiney and Archer immediately consult the full list and spot Adam Kellerman's name, rather than looking at the shortened list of the five possible suspects. When they ask the officer to bring up Kellerman's profile, the five-person list appears on the screen instead of Kellerman's record.