In the rebellious northern frontier province of colonial India, British Army Captain Scott, a young prince and the boy's governess escape by an obsolete train as they are relentlessly pursued by Muslim rebels intent on assassinating the prince.
| Actor | Role |
|---|---|
 Kenneth MoreCapt. Scott | Capt. Scott |
 Lauren BacallCatherine Wyatt | Catherine Wyatt |
 Herbert LomVan Layden | Van Layden |
 Wilfrid Hyde-WhiteBridie | Bridie |
 I.S. JoharGupta | Gupta |
 Ursula JeansLady Windham | Lady Windham |
 Eugene DeckersMr Peters | Mr Peters |
 Ian HunterSir John Wyndham | Sir John Wyndham |
 Jack GwillimBrigadier Ames | Brigadier Ames |
| GGovind Raja RossPrince Kishan | Prince Kishan |
| BBasil HoskinsAide-de-Camp | Aide-de-Camp |
 Moultrie KelsallBritish Correspondent | British Correspondent |
 Lionel MurtonAmerican Correspondent | American Correspondent |
| JJaron YaltanIndian Correspondent | Indian Correspondent |
| HHomi BodeIndian Correspondent | Indian Correspondent |
 Frank OlegarioRajah | Rajah |
| RRonald CardewStaff Colonel at Kalapur Station | Staff Colonel at Kalapur Station |
 Allan CuthbertsonMonocled Officer (uncredited) | Monocled Officer (uncredited) |
 Howard Marion-CrawfordPeter's Contact at Kalapur Station (uncredited) | Peter's Contact at Kalapur Station (uncredited) |