Marten Lamont
— Jerry Blake
Helen Talbot
— Joyce Kingston
George J. Lewis
— Jim Belmont
Lorna Gray
— Rita Parker
Hal Taliaferro
— Matt Farrell
LeRoy Mason
— Morton
William Stevens
— Agent Fred Martin
Maurice Cass
— Signor Giuseppe Morello
Kernan Cripps
— Agent Thomas Jeffries
Elaine Lange
— Countess Delremy
Frank Jaquet
— Warren Hunter
Forrest Taylor
— Otto Wolfe
Jay Novello
— Heinrick
Tom London
— Prof. Crawford
Jack Ingram
— Riggs