$20 Becomes $50
At the strip club, Streebeck asks Joe for $20 to get a tip on a location. The very next scene, Friday's voiceover says, "After an outlay of $50 by me to one of his old informants."
You'd think either the director, the script supervisor, either of the lead actors, or even the screenwriter would have noticed the change in the amount.
"She flattened a Dear John with a John Deere." - Douglas Wambaugh