Noel Madison
Dominic
Dennis Moore
Secret Service Agent Evans
Charles D. Brown
George D. Waldron
William Edmunds
Samuel 'The Dutchman' Welker
John Wray
Bowers the Printer
Wade Boteler
Police Sergeant (uncredited)
Egon Brecher
Samuels the Druggist (uncredited)
Frank Orth
Tobacconist (uncredited)
Emmett Vogan
Lab Technician Welsh (uncredited)
Charles Wagenheim
Brand the Printer (uncredited)