All of the deaths in the film had to be re-shot except the first.
Originally, Ms. Orange was supposed to have a shotgun, but producers refused to pay for it. This was therefore changed to two pistols, but the second was cut from the film.
The painting in Dick Trombley's house was hand-painted from a reference photo of the lead specifically for the film.
The producers initially refused to make the film because of controversial content in the script.