When Harry and Lewis are eating at the diner, the passing counter person's waistline is a good foot higher than the counter. When they entered it was higher than the average waist.
At the start of Tony Pettini's chase, Pettini crosses the street and continues in the same direction. When the camera cuts to following Pettini again, he's clearly back on the previous side of the street.
Although Laura Brock's character is named "Renee Coliveil" in the credits, throughout the film her surname is pronounced "Caldwell".
The name "Frits Kreuger" is misspelled, and badly at that. It should read "Fritz Krueger". As it stands, it would be pronounced "frits KROY-ger".
While the detectives speak the shadow of a third person passes over them.
Bounce card visible on left of screen when Harry walks up to the telephone booth.
Shadow of boom mic visible in top left corner of screen while the detectives question Frits Kreuger.
Mr. Krasker repeatedly mispronounces the word "telekinesis".