Including James Franciscus (Harry Scott), Wendy Hughes (Claudine Cunningham), Robert Helpmann (Shepherd), Peter Gwynne (Det. Sgt. Knox), Gerard Kennedy (Garrett), Kerry McGuire (Diana Carson), Ivar Kants (Det. Const. Gilbert), Max Meldrum (Williams), Shane Porteous (Rantz), Tony Barry (Det. Const. Langdon), Kenneth Goodlet (Det. Insp. Dixon), Sheila Kennelly (Mrs Foster), and Richard Gilbert (Wilkes).