Inspector Bradley of Scotland Yard is on the trail of the murderous ringleader of a smuggling organization in London.
| Actor | Role |
|---|---|
 Sebastian ShawInspector Bradley | Inspector Bradley |
 Phyllis BrooksAnn Perryman | Ann Perryman |
 Jack HawkinsMark McGill | Mark McGill |
 Basil RadfordSederman | Sederman |
 Kathleen HarrisonMrs. Schifan | Mrs. Schifan |
 Ludwig StösselLi Yoseph | Li Yoseph |
 Manning WhileyRonnie Perryman | Ronnie Perryman |
 Cyril SmithTiser | Tiser |
 Henry OscarSir Edward - Police Commissioner | Sir Edward - Police Commissioner |
 Kynaston ReevesMagistrate | Magistrate |
 Allan JeayesJohnson | Johnson |
 Ballard BerkeleySmuggler in Airplane | Smuggler in Airplane |
 Wally PatchBargee | Bargee |