Walter Connolly
Father Brown
Paul Lukas
Flambeau
Gertrude Michael
Evelyn Fischer
Robert Loraine
Inspector Valentine
Halliwell Hobbes
Sir Leopold Fischer
Una O'Connor
Mrs. Boggs
E. E. Clive
Sergeant Dawes
Robert Adair
Policeman (uncredited)
A
Alyce Ardell
Maid (uncredited)
King Baggot
Priest (uncredited)
Bunny Beatty
Jenny (uncredited)
C
Charles Dunbar
Fruit Vendor (uncredited)
M
Mary Flynn
Flowershop Girl (uncredited)
Douglas Gerrard
Constable (uncredited)
Donald Gray
Don (as Eldred Tidbury) (uncredited)
S
Sam Harris
Gambling House Patron (uncredited)
P
Peter Hobbes
Peter (uncredited)
Kenner G. Kemp
Eucharistic Congress Attendee (uncredited)
G
George Kirby
Butler (uncredited)
Yorke Sherwood
Storekeeper (uncredited)
Colin Tapley
Maître d' (uncredited)
F
Fred Walton
Waiter (uncredited)