A London slasher pack the suitcases of his victims before stabbing them to death in this adaptation of Edgar Wallace's 'Secret of the Black Suitcases.'
| Writing | Artur Brauner | Screenplay |
| Writing | Jesús Franco | Screenplay |
| Production | Artur Brauner | Producer |
| Editing | Renate Engelmann | Editor |
| Sound | Rolf Kühn | Music |
| Directing | Jesús Franco | Director |
| Camera | Manuel Merino | Director of Photography |
| Writing | Bryan Edgar Wallace | Novel |
| Production | Arturo Marcos | Producer |
| Sound | Max Galinsky | Sound |
| Editing | María Luisa Soriano | Editor |
| Production | Rolf Meier | Production Manager |
| Art | Klaus Meyenberg | Set Decoration |
| Directing | Ruth Keller | Assistant Director |
| Production | Karl Heinz Mannchen | Executive Producer |
| Art | Hans Jürgen Kiebach | Production Design |
