The Door with Seven Locks

Heinz Drache

Inspector Dick Martin

Eddi Arent

Assistant Detective Holmes

Sabine Sesselmann

Sybil Lansdown

Pinkas Braun

Dr. Antonio Staletti

Hans Nielsen

Lawyer Warren D. Haveloc

Gisela Uhlen

Emily Cody

Werner Peters

Bertram Cody

Klaus Kinski

Pheeny

Siegfried Schürenberg

Sir John

Jan Hendriks

Tom Cawler

Ady Berber

Giacco

Friedrich Joloff

Janitor Burt

Arthur Schilsky

Peter Livingston

Eva Ebner

Ansagerin am Flughafen (voice)

Alfred Vohrer

Ansager am Flughafen (voice) / Schaulustiger / Sanitäter (voice)