Hornblower deve realizar una peligrosa misión de entregar a un noble inmigrante francés , que esconde un secreto sobre oficiales enemigos de alto rango.
 | Ioan Gruffudd | Commander Horatio Hornblower |
| Robert Lindsay [II] | Admiral Sir Edward Pellew |
| Paul McGann | Lieutenant Bush |
| Lorcan Cranitch | Wolfe |
| Tony Haygarth | . Master Prowse |
| Julia Sawalha | Julia Sawalha |
| Barbara Flynn | Mrs. Mason |
| Paul Copley | Matthews |
| Sean Gilder | Styles |
| Greg Wise | Major Côtard |
| Ian McElhinney | Captain Hammond |
| Christian Coulson | Midshipman John 'Jack' Hammond |
| Ron Cook | Steward James Doughty |
