| Person | Type | Job | Role(s) |
|---|---|---|---|
 Basil Dickey | Crew | Writing | Screenplay |
Benjamin H. Kline | Crew | Camera | Director of Photography |
 Eddie Parker | Crew | Crew | Stunts |
Floyd Morgan | Crew | Sound | Original Music Composer |
 George DeNormand | Crew | Crew | Stunts |
Jack Fier | Crew | Production | Producer |
Joseph F. Poland | Crew | Writing | Screenplay |
 Morris Stoloff | Crew | Sound | Music Director |
Ned Dandy | Crew | Writing | Screenplay |
Norman Deming | Crew | Directing | Director |
Richard Fantl | Crew | Editing | Editor |
Sam Nelson | Crew | Directing | Director |
 Sidney Cutner | Crew | Sound | Original Music Composer |
 Chuck Hamilton | Crew | Crew | Stunts |
Jerry Thoms | Crew | Editing | Editor |
 Al Kikume | Cast | Actor | Lothar |
 Art Mix | Cast | Actor | Ironworks Henchman |
Beatrice Curtis | Cast | Actress | Rest Home Nurse |
Bert Young | Cast | Rest Home Henchman | |
 Blackie Whiteford | Cast | Actor | Construction Camp Henchman |
Bud Wolfe | Cast | Actor | Tower Henchman |
 Budd Buster | Cast | Actor | Construction Camp Henchman |
Buel Bryant | Cast | Rest Home & Ironworks Henchman | |
 Charles Dorety | Cast | Actor | Mill River Inn Henchman |
Charles McMurphy | Cast | Actor | Construction Foreman |
 Charles Sherlock | Cast | Actor | Ship Henchman |
 Charles Sullivan | Cast | Actor | Henchman-Driver |
 Cy Schindell | Cast | Actor | Bank Henchman |
 Cyril Ring | Cast | Actor | Magic Mart Henchman |
 Dick Curtis | Cast | Actor | Dorgan |
 Don Beddoe | Cast | Actor | Frank Raymond |
 Doris Weston | Cast | Actress | Betty Houston |
 Eddie Fetherston | Cast | Actor | Rest Home Henchman |
 Eddie Foster | Cast | Actor | Ed |
Eddie Hart | Cast | Actor | Williams |
Eddie Laughton | Cast | Actor | Kidnapping Henchman |
Eddie Parker | Cast | Actor | Henchman |
 Edward Earle | Cast | Actor | Dr. Andre Bennett |
 Ernie Adams | Cast | Actor | Brown |
Ernie Alexander | Cast | Actor | Cabbie |
 Forbes Murray | Cast | Actor | Professor Houston |
 Frank Hagney | Cast | Actor | Harris |
 Frank Mills | Cast | Actor | Gas Station Hitman |
Frank Wayne | Cast | Henchman | |
 George Chesebro | Cast | Actor | Baker |
 Harry Bernard | Cast | Actor | Construction Camp Watchman |
 Harry Tenbrook | Cast | Actor | Streeter |
Jerry Frank | Cast | Harper Drive Henchman | |
Jerry Jerome | Cast | Ward | |
 John Tyrrell | Cast | Actor | Dirk |
 Kenneth MacDonald | Cast | Actor | James Webster |
 Kit Guard | Cast | Actor | Powerhouse Henchman |
 Knox Manning | Cast | Actor | Narrator |
 Lester Dorr | Cast | Actor | Gray |
 Oscar 'Dutch' Hendrian | Cast | Actor | Powerhouse Henchman |
Pat McKee | Cast | Actor | Dam Henchman |
 Ralph Peters | Cast | Actor | Mohawk Steward-Henchman |
 Reginald Simpson | Cast | Actor | Parsons |
 Rex Downing | Cast | Actor | Tommy Houston |
 Robert Sterling | Cast | Actor | Henchman |
Rose Plumer | Cast | Actress | Ship Passenger |
 Sam Ash | Cast | Actor | George Regan |
 Stanley Blystone | Cast | Actor | Henchman CX12 |
 Stanley Brown | Cast | Actor | Green |
Stanley Mack | Cast | Roadster Henchman | |
 Steve Clark | Cast | Actor | Henchman (uncredited) |
 Tom London | Cast | Actor | Mill River Inn Henchman |
 Tom Steele | Cast | Actor | Powerhouse Henchman |
 Warren Hull | Cast | Actor | Mandrake the Magician |
George Turner | Cast | Actor | Apartment-Raider |
Chuck Hamilton | Cast | Actor | Bank Henchman |
| Person | Type | Job | Role(s) |
