Acting

Lord Kensington (uncredited)

Quizmaster / Collie (voice)

Dr. Feodor Orloff

Ian Hunt

Bartlett

Harry Nagle

Sinclair

Guy Penrose

Commodore Newcombe

Dr. Roland Gerard

Dr. Wayne

Gerry Monte aka Sabourin

Timothy Chappel

Sir Roderick Strood

Tom Martin

Unknown Role

Max Collodi

Inspector

John Wellington (uncredited)

George Willis