The picture was originally filmed as a tele-movie made-for-television but was first released theatrically instead.
Lead actor George Peppard spent time with police detectives in Los Angeles and participated in actual stake-outs in preparation for his role.
Star George Peppard had to shoot a large window for one scene but the glass broke and showered over him, cutting around his mouth, right eye and left hand. He continued filming with the real wounds on his face instead of the artificial wounds normally applied by the makeup team for the other scenes.
Actor George Peppard and director Richard T. Heffron had previously collaborated on the TV series Banacek (1972).
The movie that is showing on television when Vince Newman (George Peppard) comes home is Double Indemnity (1944).