Cast (9)

Boris Karloff

Dr. Laurence

Anna Lee

Dr. Clare Wyatt

John Loder

Dick Haslewood

Frank Cellier

Lord Haslewood

Donald Calthrop

Clayton

Cecil Parker

Dr. Gratton

Lyn Harding

Prof. Holloway

Clive Morton

Journalist

D.J. Williams

Landlord

Crew (11)

Jack E. Cox

Director of Photography

Robert Stevenson

Director

Sidney Gilliat

Screenplay

Michael Balcon

Producer

L. du Garde Peach

Screenplay

John L. Balderston

Screenplay

Alex Vetchinsky

Art Direction

Roy Ashton

Makeup Artist

R. E. Dearing

Editor

Hubert Bath

Original Music Composer

Alfred Roome

Editor