A government agent is returning from France with secret blueprints that were stolen from his government. On the train ride home, thieves break into his compartment and murder him.
| Actor | Role |
|---|---|
| JJohn WarwickFrank Drayton | Frank Drayton |
 Jenny LairdBarbara lane | Barbara lane |
 Paul NevilleVautel | Vautel |
| IIvan WilmotVeinberg | Veinberg |
| AAubrey PollockSir James Garfield | Sir James Garfield |
| VVictor HagenCarlton | Carlton |
 Nigel BarrieSir Donald Frame | Sir Donald Frame |
| SSybil BrookeHotel Manager | Hotel Manager |
| DDorothy DewhurstMiss Parker | Miss Parker |