The invention of a war machine, that brings to explosion everything one wants to, puts Scotland Yard and Captain Drummond into alarm.
Adventure | Sci-Fi
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| John Howard | … | Capt. Hugh Chesterton ‘Bulldog’ Drummond | |
| Heather Angel | … | Phyllis Clavering | |
| H.B. Warner | … | Col. J.A. Nielsen | |
| Reginald Denny | … | Algernon ‘Algy’ Longworth | |
| E.E. Clive | … | ‘Tenny’ Tennison | |
| Jean Fenwick | … | Lady Beryl Ledyard | |
| Zeffie Tilbury | … | Aunt Meg | |
| George Zucco | … | Rolf Alferson | |
| Leonard Mudie | … | Richard Gannett | |
| Evan Thomas | … | John Smith | |
| Clyde Cook | … | Short, Mustachio’d Constable (Sacker) | |
| David Clyde | … | Tall, Cleanshaven Constable (McThane) | |
| George Regas | … | Soongh, Lady Beryl’s man | |
| Neil Fitzgerald | … | Sir Malcolm McLeonard | |
| Claud Allister | … | Sir Basil Leghorne |