Sydney homicide detective Sergeant Scobie Malone and his offsider investigate the murder of Helga, whose corpse is found in the basement of the Sydney Opera House.
Jack Thompson
as Scobie Malone
Judy Morris
as Helga Brand
Shane Porteous
as Constable Russ Clements
Noel Ferrier
as Mr. Sin
Jacqueline Kott
as Norma Helidon
James Condon
as Walter Helidon
Cul Cullen
as Captain Bixby
Ken Goodlet
as Premier
Walter Sullivan
as Inspector Fulmer
Max Meldrum
as Scientific Officer
Joe James
as Attorney General
Victoria Anoux
as Becky
