Sydney Greenstreet as Jerome K. Arbutny

Geraldine Fitzgerald as Crystal Shackleford

Peter Lorre as Johnny West

Joan Lorring as Icey Crane

Robert Shayne as Bertram Fallon

Marjorie Riordan as Janet Elliott

Arthur Shields as Prosecutor

Rosalind Ivan as Lady Rhea Beladon

John Alvin as Junior Clerk

Peter Whitney as Timothy Delaney aka Gabby

Alan Napier as David Shackleford

Clifford Brooke as Senior Clerk

Doris Lloyd as Mrs. Proctor

Norman Ainsley as Mr. Giesing (uncredited)

Edward Biby as Man on the Street (uncredited)

Benny Burt as Drunken Stranger (uncredited)

Woody Chambliss as Man in Pub (uncredited)

Tom Coleman as Pub Patron (uncredited)

Alec Craig as Man on Park Bench (uncredited)

Cyril Delevanti as Stockbroker (Voice) (uncredited)

Leslie Denison as Detective (uncredited)

Creighton Hale as Man in Pub (uncredited)

Sam Harris as Magistrate (uncredited)

Holmes Herbert as Sir Robert (uncredited)

Keith Hitchcock as Donald Fry (uncredited)

Leyland Hodgson as Police Inspector in Pub (uncredited)

Olaf Hytten as Prison Turnkey (uncredited)

Fred Kelsey as Man on the Street / Man in Pub (uncredited)

Colin Kenny as Alfred, Innkeeper / Bartender (uncredited)

Connie Leon as Flower Woman (uncredited)

Stanley Logan as 'Major' George Alfred Beach (uncredited)

Jeffrey Sayre as Waiter (uncredited)

Reginald Sheffield as Hotel Clerk (uncredited)

Leo White as News Hawker (uncredited)

Eric Wilton as Bailiff (uncredited)

Ian Wolfe as Gillkie the Barrister (uncredited)

John Burton as Narrator (uncredited)

Tom Pilkington as Man in Pub (uncredited)

Stanley Mann as Newshawker (uncredited)

Thomas Martin as Reporter in Courtroom (uncredited)