Carl Schell
— Dr. Julian Olcott
Barbara Lass
— Priscilla
Curt Lowens
— Director Swift
Maurice Marsac
— Sir Alfred Whiteman
Luciano Pigozzi
— Walter Geoffrey
Joseph Mercier
— School Porter
Michela Roc
— (as Maureen O'Connor) Leonor MacDonald
Anni Steinart
— Sheena Whitman
Mary McNeeran
— Mary Smith
Grace Neame
— Sandy
Herbert Diamonds
— Police Inspector
John Karlsen
Giuseppe Transocchi
— Tommy the Porter