Mystery Submarine (1950) — Cast
Cast
| Frank Rawls | Expedition Members |
| Howard Negley | Elliott |
| Ludwig Donath | Adolph |
| Macdonald Carey | Brett |
| Larry Winter | Expedition Members |
| Robert Douglas | Fhloston Commander |
| Peter Similuk | Expedition Members |
| Katherine Warren | Mrs. Dunn |
| Carl Esmond | Heldman |
| Bruce Morgan | Kramer |
| Fred Nurney | Bruno Klement |
| Paul Hoffman | Hartwig Seeler |
| Jacqueline Dalya | Carla |
| Ralph Brooks | Stefan Weiser |
| Märta Torén | Madeline |
| Peter Michael | Expedition Members |
Crew
| Leslie I. Carey | Sound |
| Frank Shaw | Second Unit Director |
| Robert Boyle | Art Direction |
| Bud Westmore | Makeup Artist |
| Russell A. Gausman | Set Decoration |
| Otto Siegel | Set Decoration |
| Bernard Herzbrun | Art Direction |
| David S. Horsley | Special Effects |
| Joan St. Oegger | Hairstylist |
| Joe Lapis | Sound |
| Douglas Sirk | Director |
| Bill Thomas | Costume Design |
| B.R. Van Buskirk | Technical Advisor |
| Clifford Stine | Director of Photography |
| Joseph Gershenson | Music Director |
| George F. Slavin | Screenplay |
| Ralph Dietrich | Producer |
| Virgil W. Vogel | Editor |
| George W. George | Story |