Early acting roles for Debbie Harry (of New York City's punk-new wavers Blondie) and Danny DeVito.

This film was shot on weekends.

Film debut of Treat Williams. Moreover, Williams got his SAG card from acting in this movie.

Director Ivan Nagy didn't get along with lead actress Diahn Williams.

Jules Dassin was originally considered to direct this film.

Randolph Evans was shot to death unarmed by a now-former NYPD officer (Robert Torsney) over a month after its New York City debut. Torsney would later be ruled not guilty by insanity, which is what Murray's Ed Lacy was somewhat.