This was Bill Bixby's last film role after a thirty-year acting career.
In the garage scene, just after the character played by Bill Bixby is hit by the killer's vehicle, the killer throws a belt and his face can be seen a little.
Was considered the official pilot of the "Diagnosis Murder" series that lasted until 2002
This movie, despite being the pilot of the "Diagnosis: Murder" series, is the second appearance of Dick Van Dyke as Dr. Mark Sloan; a year before, Dick Van Dyke debuted as Mark Sloan in an episode of "Jake and the Fatman".
This was one of the few times that "Diagnosis: Murder" was headed by a well-known guest cast. Here appear big stars like Bill Bixby "The Incredible Hulk", Cynthia Gibb "Death Warrant", William Atherton "Ghostbusters", "Die Hard " and "Die Hard 2", Ken Kercheval "Dallas" and William B. Davis "The X-Files".