A detective is on the trail of the Zodiac, a serial rapist who has been taunting him with rhyming clues and riddles.
| Actor | Role |
|---|---|
 John HolmesThe Zodiac | The Zodiac |
| BBuddy BooneSam Dobbs | Sam Dobbs |
 Andy BellamyPolicewoman | Policewoman |
 Sandy DempseySecretary | Secretary |
 Tricia OpalSecretary | Secretary |
 Nora WieternikSecretary | Secretary |
 Annette MichaelWoman in Garden | Woman in Garden |
 Linda VroomBlonde in Pool | Blonde in Pool |
 John DullaghanVoice Overs (voice) (uncredited) | Voice Overs (voice) (uncredited) |
 Eve OrlonNot listed | Not listed |
 Gerard BroulardNot listed | Not listed |