Nils Asther

~ as ~

Dr. Julian Karell

Helen Walker

~ as ~

Eve Brandon

Reinhold Schünzel

~ as ~

Dr. Kurt van Bruecken

Paul Cavanagh

~ as ~

Dr. Henry Latimer

Konstantin Shayne

~ as ~

Dr. B.A. Vishanoff

Leyland Hodgson

~ as ~

Dr. G.B. Albertson

Edmund Breon

~ as ~

Sir Humphrey Brandon

Morton Lowry

~ as ~

Alan Guthrie

Matthew Boulton

~ as ~

Detective Inspector Ned Garth

Eustace Wyatt

~ as ~

Inspector Lawson