- Peter Lorre
- Colonel Gimpy
- Brian Donlevy
- Ace Martin
- Helen Wood
- Ruth Franklin
- Ralph Morgan
- John R. Fleming
- Thomas Beck
- Joe Randall
- Kay Linaker
- Mrs. Fleming
- Lester Matthews
- Sidney Grant
- Earle Foxe
- Operative #30
- J. Carrol Naish
- Operative #77
- Gloria Roy
- Operative #16
- Oscar Apfel
- Alfred Knuxton
- Paul Stanton
- Daniel D. Harrington
- Howard Hickman
- Major White
- Lynn Bari
- Office Worker
- Madge Bellamy
- Secretary
- William 'Billy' Benedict
- Bunky, Office Boy
- Gary Breckner
- Announcer in Recording Room
- Don Brodie
- Cameraman
- Edward Cooper
- Matthews - the Butler
- Hal K. Dawson
- Reporter
- Eddie Fetherston
- Reporter
- Almeda Fowler
- Sob Sister
- Curt Furberg
- Spy
- Chester Gan
- House Boy
- Harrison Greene
- Comic at Airport
- Sam Hayes
- Sam Hayes - Interviewer
- Robert Homans
- Steamer Captain
- Annette Lake
- Sauerkraut Vendor
- Paul McVey
- Announcer
- George Offerman Jr.
- Eddie, the waiter
- Frank Arthur Swales
- Spy
- Wilhelm von Brincken
- Spy
- Billy Wayne
- Steamer Officer
- Jane Weir
- Sob Sister
- Charles Williams
- Reporter
