A German scientist murders his fiancée during World War II when he learns that she has been selling the results of his secret research to the enemy.
| Directing | Peter Lorre | Director |
| Editing | Carl Otto Bartning | Editor |
| Production | Arnold Pressburger | Producer |
| Camera | Václav Vích | Director of Photography |
| Sound | Willy Schmidt-Gentner | Original Music Composer |
| Writing | Axel Eggebrecht | Screenplay |
| Writing | Benno Vigny | Screenplay |
| Writing | Peter Lorre | Screenplay |
| Art | Franz Schroedter | Art Direction |
| Art | Karl Weber | Art Direction |
| Costume & Make-Up | Heinz Stamm | Makeup Artist |
| Costume & Make-Up | Jupp Paschke | Makeup Artist |
