Nils Asther
Dr. Julian Karell
Helen Walker
Eve Brandon
Reinhold Schünzel
Dr. Kurt van Bruecken
Paul Cavanagh
Dr. Henry Latimer
Konstantin Shayne
Dr. B.A. Vishanoff
Leyland Hodgson
Dr. G.B. Albertson
Edmund Breon
Sir Humphrey Brandon
Morton Lowry
Alan Guthrie
Matthew Boulton
Detective Inspector Ned Garth
Eustace Wyatt
Inspector Lawson