The position of the microphone cord moves from behind the radio to in front of the radio.
When picking up the last truant Reed, sitting in the patrol car, reaches into the backseat to open the rear door from inside.
Real police cars can't be opened from inside the backseat.
The address given for one of the last calls is for a home burglary at 1216 Northgate. When the officers pull up in front of the house the address painted on the curb is 10063. The actual location of the filming was 10063 Toluca Lake Ave in Los Angeles.
When Officer Malloy is jumping out of the way of the Dune Buggy in the driveway, it is an obvious stunt double.
When the Lincoln is broken down, Harvey tries to start it. The sound of the engine cranking is not that of a Lincoln, but the distinctive sound of a Chrysler product.
When the detective pulls about twenty heroin packets hidden in the gas tank from the gas fill, the last one is broken but all the other packets are dry with no gasoline on them whatsoever. Even after driving a short distance, the packets would have some gasoline on them.
When the mother and son are being interviewed by Malloy, as they go to leave, the mother (Barbara Nichols) accidentally slams her son (Vincent Van Patten) into the door.