Stranger on the Third Floor

Peter Lorre The Stranger

John McGuire Michael Ward

Margaret Tallichet Jane

Charles Waldron District Attorney

Elisha Cook Jr. Joe Briggs

Charles Halton Albert Meng

Ethel Griffies Mrs. Kane

Cliff Clark Martin

Oscar O'Shea The Judge

Alec Craig Defense Attorney

Otto Hoffman Police Surgeon

Bobby Barber Giuseppe, the Italian Grocer (uncredited)

Vince Barnett Cafe Customer (uncredited)

Lee Bonnell Reporter (uncredited)

Harry C. Bradley Court Clerk (uncredited)

Lynton Brent Cabdriver at Nick's (uncredited)

Helen Chapman Woman (uncredited)

Jack Cheatham Detective (uncredited)

Ray Cooke Phil, Lunch Counterman (uncredited)

Robert Dudley Postman (uncredited)