Prior to the United States' involvement in World War II, the masked vigilante Spy Smasher fights Nazi agents operating within the US, led by the treacherous sabotage leader codenamed The Mask.
| Directing | William Witney | Director |
| Writing | Ronald Davidson | Screenplay |
| Writing | Norman S. Hall | Screenplay |
| Writing | William Lively | Screenplay |
| Writing | Joseph O'Donnell | Screenplay |
| Writing | Joseph F. Poland | Screenplay |
| Production | William J. O'Sullivan | Producer |
| Editing | Tony Martinelli | Editor |
| Editing | Edward Todd | Editor |
| Costume & Make-Up | Bob Mark | Makeup Artist |
| Crew | Daniel J. Bloomberg | Sound Recordist |
| Crew | Charles L. Lootens | Sound Recordist |
| Crew | Howard Lydecker | Special Effects |
| Crew | Theodore Lydecker | Special Effects |
| Crew | Yakima Canutt | Stunts |
| Crew | Tommy Coats | Stunts |
| Crew | John Daheim | Stunts |
| Crew | James Fawcett | Stunts |
| Crew | Duke Green | Stunts |
| Crew | Jerry Jerome | Stunts |
| Crew | Bert LeBaron | Stunts |
| Crew | Carey Loftin | Stunts |
| Crew | Charles Regan | Stunts |
| Crew | Loren Riebe | Stunts |
| Crew | Buddy Roosevelt | Stunts |
| Crew | David Sharpe | Stunts |
| Crew | Cy Slocum | Stunts |
| Crew | Tom Steele | Stunts |
| Crew | Duke Taylor | Stunts |
| Crew | Sid Troy | Stunts |
| Crew | Bill Wilkens | Stunts |
| Crew | Bud Wolfe | Stunts |
| Camera | Reggie Lanning | Director of Photography |
| Crew | Ken Terrell | Stunts |
| Sound | Mort Glickman | Original Music Composer |
