La clave del enigma

Hardy Krüger

Jan-Van Rooyer

Stanley Baker

Insp. Morgan

Micheline Presle

Jacqueline Cousteau

John Van Eyssen

Insp. Westover

Gordon Jackson

Sergeant

Robert Flemyng

Sir Brian Lewis

Jack MacGowran

Postman

Redmond Phillips

Police doctor

George Roubicek

Police constable

Lee Montague

Sgt. Farrow