Directed by
| Fred C. Brannon | ||
| William Witney | ||
Writing Credits
| Albert DeMond | ... | (original screenplay) and |
| Basil Dickey | ... | (original screenplay) and |
| Jesse Duffy | ... | (original screenplay) and |
| Sol Shor | ... | (original screenplay) |
| Albert DeMond | ||
| Basil Dickey | ||
| Jesse Duffy | ||
| Sol Shor | ||
Cast (in credits order) complete, awaiting verification
| Charles Quigley | ... | Duncan Richards (archive footage) | |
| Linda Stirling | ... | Diana Farnsworth (archive footage) | |
| Clayton Moore | ... | Louis Ashe (archive footage) | |
| I. Stanford Jolley | ... | Blackton (archive footage) | |
| Kenne Duncan | ... | Chambers (archive footage) | |
| Forrest Taylor | ... | Prof. Van Wyck (archive footage) | |
| Emmett Vogan | ... | Prof. Anderson (archive footage) | |
| Sam Flint | ... | Prof. Maxwell (archive footage) | |
 |
Joseph Forte | ... | Parker (archive footage) (as Joe Forte) |
| Stanley Price | ... | Count Fator (archive footage) | |
| Wheaton Chambers | ... | Wilson (archive footage) | |
| Tom Steele | ... | Stricker (archive footage) | |
| Dale Van Sickel | ... | Harte (archive footage) | |
| Rex Lease | ... | Bain (archive footage) | |
| Fred Graham | ... | Zane (archive footage) | |
| Bud Wolfe | ... | Cross (archive footage) | |
| Rest of cast listed alphabetically: | |||
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Rod Bacon | ... | Armored Car Guard (archive footage) (uncredited) |
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Virginia Carroll | ... | Nurse (archive footage) (uncredited) |
| John Daheim | ... | Relief Guard (archive footage) (uncredited) | |
| Carey Loftin | ... | Lab Guard 1 (archive footage) (uncredited) | |
| George Magrill | ... | Fiske (archive footage) (uncredited) | |
| Eddie Parker | ... | Sherman (archive footage) (uncredited) | |
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Rose Plumer | ... | Mrs. Malloy (archive footage) (uncredited) |
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Loren Riebe | ... | Truck Henchman (archive footage) (uncredited) |
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Eddie Rocco | ... | Kell (archive footage) (uncredited) |
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Dick Rush | ... | Police Inspector (archive footage) (uncredited) |
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Duke Taylor | ... | Henchman (archive footage) (uncredited) |
| Ken Terrell | ... | Warehouse Guard (archive footage) (uncredited) | |
| Robert J. Wilke | ... | Scott (archive footage) (uncredited) | |
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Bill Wilkus | ... | Cole (archive footage) (uncredited) |
| Bill Yrigoyen | ... | Lab Henchman (archive footage) (uncredited) | |
| Joe Yrigoyen | ... | Phoney Conference Room Janitor (archive footage) (uncredited) | |
Produced by
| Ronald Davidson | ... | associate producer |
Cinematography by
| Bud Thackery | ||
Editing by
| Cliff Bell Sr. | ... | (as Cliff Bell) |
| Harold Minter | ... | (as Harold R. Minter) |
Art Direction by
| Fred A. Ritter | ||
Set Decoration by
| John McCarthy Jr. | ||
| Earl Wooden | ||
Makeup Department
| Bob Mark | ... | makeup supervisor |
| Peggy Gray | ... | hair stylist (uncredited) |
Production Management
| Roy Wade | ... | unit manager |
Sound Department
| William E. Clark | ... | sound |
Special Effects by
| Howard Lydecker | ... | special effects |
| Theodore Lydecker | ... | special effects |
Costume and Wardrobe Department
| Adele Palmer | ... | costume supervisor (uncredited) |
Editorial Department
| Murray Seldeen | ... | supervising editor (uncredited) |
Music Department
| Mort Glickman | ... | musical director |
| Joseph Dubin | ... | composer: stock music (uncredited) |
| Cy Feuer | ... | composer: stock music (uncredited) |
| Paul Sawtell | ... | composer: stock music (uncredited) |
