Horst Janson

as Captain Kronos

John Cater

as Professor Hieronymous Grost

Caroline Munro

as Carla

John Carson

as Dr. Marcus

Shane Briant

as Paul Durward

Lois Daine

as Sara Durward

Ian Hendry

as Kerro

Wanda Ventham

as Lady Durward

William Hobbs

as Hagen

Brian Tully

as George Sorell

Lisa Collings

as Vanda Sorell

Olga Anthony

as Lilian

Susanna East

as Isabella Sorell

Robert James

as Pointer

Perry Soblosky

as Barlow

Elizabeth Dear

as Ann Sorell

Penny Price

as Whore

Peter Davidson

as Big Man

Paul Greenwood

as Giles

John Hollis

as Barman

Stafford Gordon

as Barton Sorell

Joanna Ross

as Myra

Neil Seiler

as Priest

Gigi Gurpinar

as Blind Girl

Terence Sewards

as Tom