Donald Crowhurst, un magnate, intenta ganar una copa de vela navegando solo durante mucho tiempo por el océano.
 | Rachel Weisz | Clare Crowhurst |
 | Colin Firth | Donald Crowhurst |
 | David Thewlis | Rodney Hallworth |
 | Jonathan Bailey | Wheeler |
| Adrian Schiller | Elliot |
| Sebastian Armesto | Nelson Messina |
| Genevieve Gaunt | Miss Teignmouth |
| Sam Hoare | Mr. Hughes |
| Dilyana Bouklieva | Publicista |
| Tim Downie | Editor |
| Laurence Spellman | |
| Simon Chandler | Sidney Rawle |
| Ashley Hudson | Caballero |
| Oliver Maltman | Dennis Herbstein |
| Kit Connor | James Crowhurst |
| Richard Braine | Consejero |
| Richard Teverson | Nigel Harrison |
| Nick Owenford | Cámara |
