An Australian woman arrives in London to search for her sister who she finds is involved with a heroin smuggling gang. The gang itself is under attack from an unknown rival, who is methodically assassinating them with a shot to the head.
| Directing | Harald Philipp | Director |
| Writing | Harald Philipp | Screenplay |
| Writing | Edgar Wallace | Novel |
| Writing | Horst Wendlandt | Screenplay |
| Sound | Peter Thomas | Music |
| Production | Horst Wendlandt | Producer |
| Production | Preben Philipsen | Producer |
| Editing | Alfred Srp | Editor |
| Camera | Karl Löb | Director of Photography |
| Art | Johannes Ott | Production Design |
| Costume & Make-Up | Ingrid Zoré | Costume Design |
| Costume & Make-Up | Willi Nixdorf | Makeup Artist |