Ray Milland as Stephen Neale

Marjorie Reynolds as Carla Hilfe

Carl Esmond as Willi Hilfe

Hillary Brooke as Mrs. Bellane #2

Percy Waram as Inspector Prentice

Dan Duryea as Cost/Travers the Tailor

Alan Napier as Dr. JM Forrester

Erskine Sanford as George Rennit

Harry Allen as Tailor's Delivery Man (uncredited)

Frank Baker as Scotland Yard Man (uncredited)

Vangie Beilby as Old Lady at Charity Bazaar (uncredited)

Wilson Benge as Air Raid Warden (uncredited)

Evelyn Beresford as Fat Lady at Charity Bazaar (uncredited)

Arthur Blake as Man (uncredited)

Matthew Boulton as Official, Ministry of Home Security (uncredited)

George Broughton as Man in Tailor's Shop (uncredited)

Leonard Carey as Porter (uncredited)

Bruce Carruthers as Police Clerk (uncredited)

David Clyde as English Bobby (uncredited)

Anne Curson as Lady with Children (uncredited)

Frank Dawson as Vicar (uncredited)

Cyril Delevanti as Railroad Agent (uncredited)

Aminta Dyne as Mrs. Bellane #1 - Fortune Teller (uncredited)

Mary Field as Martha Penteel (uncredited)

Edward Fielding as Ministry Executive (uncredited)

Byron Foulger as Mr. Newby (uncredited)

Karen X. Gaylord as Young Woman (uncredited)

Helena Grant as Mrs. Merrick - Hilfe's Secretary (uncredited)

Grayce Hampton as Lady with Floppy Hat (uncredited)

Olaf Hytten as Tailor's Shop Clerk (uncredited)

Boyd Irwin as Scotland Yard Man Finding Cake Box (uncredited)

Colin Kenny as Scotland Yard Man (uncredited)

Frank Leigh as Man (uncredited)

Connie Leon as Lady Purchaser of Cake (uncredited)

Thomas Louden as Mr. Newland - Bookseller (uncredited)

Lester Matthews as Dr. Norton at Lembridge Asylum (uncredited)

Clive Morgan as Man in Tailor's Shop (uncredited)

Ottola Nesmith as Woman at Admission Gate (uncredited)

Jessica Newcombe as Cake Booth Lady (uncredited)

Albert Petit as Guest at Seance (uncredited)

Hilda Plowright as Maid for Mrs. Bellane #2 (uncredited)

Edmond Russell as Unspecified Role (uncredited)

Francis Sayles as Man Answering Rennit's Knock (uncredited)

Eric Wilton as Scotland Yard Man (uncredited)

Eustace Wyatt as Blind Man (uncredited)