A series of murders in the West End of London baffle the officers of Scotland Yard and draw the interest of a crime reporter to the case.
| Writing | Lesley Storm | Screenplay |
| Writing | Gordon Beckles | Story |
| Sound | Harry Benson | Sound Engineer |
| Editing | Flora Newton | Editor |
| Writing | J. Lee Thompson | Screenplay |
| Art | J. Charles Gilbert | Settings |
| Directing | Harold Huth | Director |
| Camera | Claude Friese-Greene | Director of Photography |
| Sound | F. McNally | Sound Recordist |