When Malloy and Reed are talking to each other while standing on the sidewalk after searching for Charlie, a Cadillac is approaching in the center lane. When the camera shot changes, the Cadillac is gone.
When Reed and Malloy check out the halfway house, a row of cars can be seen parked along the right side of the street, including a maroon Thunderbird and the ubiquitous gold Mustang. The cars are far too close together.
During the bank robbery, a real LAPD cop is seen in the background holding traffic as the film production cop car proceeds with the scene.
When Reed opens the rear door of the home at the faked stamp burglary, filming lights are reflected in the glass.
When Reed and Malloy visit a halfway house to find a place for Charlie Bishop to stay, the man in charge is faintly heard to call Malloy "Captain Malloy" when greeting them on the steps outside.