James Franciscus

as Harry Scott

Wendy Hughes

as Claudine Cunningham

Robert Helpmann

as Shepherd

Peter Gwynne

as Det. Sgt. Knox

Gerard Kennedy

as Garrett

Kerry McGuire

as Diana Carson

Ivar Kants

as Det. Const. Gilbert

Max Meldrum

as Williams

Shane Porteous

as Rantz

Tony Barry

as Det. Const. Langdon

Ken Goodlet

as Det. Insp. Dixon

Sheila Kennelly

as Mrs. Foster

Richard Gilbert

as Wilkes

Alan Russell

as Priest

Terry Jowett

as Policeman at Suicide

Charles Pointon

as Man in Lobby

Peter Armstrong

as Heavy

Bill Buckle

as Painter

Gordon Piper

as Policeman in House

Caroline Davies

as Bride