Valentine Dyall

as Reginald Marley

as Narrator (uncredited)

as Vesper Lynd's Assistant / Dr. Noah's Voice (uncredited)

as The Black Guardian

as Narrator (voice)

as Charles Heywood

as Dr. George Clinton

as 2nd Major Domo

as von Schonborn

as Narrator (voice/ uncredited)

as Norman Guard

as The Guardian

as Black Guardian

as Butler

as Angus, a Lord

as Nori

as Dr. Pascal Keldermans

as Deep Thought

as Lorrimer

as Seneca

as Inspector Kellogg