- William Gargan
- Perry Travis
- Marguerite Churchill
- Lois Allen
- Gene Morgan
- Brainy Barker
- Romaine Callender
- E.J. Easton
- Egon Brecher
- Sir Conrad Stava
- Drue Leyton
- Norma Foster
- Wade Boteler
- Police Lt. Conroy
- Dwight Frye
- McBride
- Raymond Lawrence
- Harkness
- Stanley Andrews
- Earl Quillan
- Don Brodie
- Taxicab Driver
- Frank Bull
- Radio Announcer
- Ralph Byrd
- Cop
- Gino Corrado
- Waiter
- Harry Depp
- Julius Scott
- Robert Fiske
- Aviator
- John Gallaudet
- Billy Howard
- Harry Harvey
- Bennett
- Jack Hatfield
- Reporter
- Eddie Kane
- Venuti
- Edward McWade
- Walter Emerson
- Ted Oliver
- Cop
- Edward Peil Sr.
- Peters--Fingerprint Man
- Lee Prather
- Customs Officer
- Francis Sayles
- Waiter
- Albert J. Smith
- Mike
- George Webb
- Coroner
- Norman Willis
- Joel Balerino
- William Worthington
- John J. Foster
