| Stefanie Martini | Georgina Mortmaigne |
| Amy McCallum | Julia Mortmaigne |
| Darrell D'Silva | Geoff Craven |
| Rob Callender | Philip Hathaway |
| Ben Lambert | Guy Mortmaigne |
| Eleanor Williams | Ingrid Hjort |
| Milo Twomey | Dr. Hector Lorenz |
| Peter Forbes | Hodges |
| Sam Coulson | Mark Bryden |
| John Draycott | Turnbull |
| Shaun Evans | DC Endeavour Morse |
| Jack Bannon | Sam Thursday |
| Roger Allam | DI Fred Thursday |
| Anton Lesser | Chief Superintendent Reginald Bright |
| Sean Rigby | DS Jim Strange |
| Dakota Blue Richards | WPC Shirley Trewlove |
| Hermione Corfield | Cassie Watkins |
| David Burnett | Ricky Parker |
| Hugh Simon | Professor Kemp |
| James Bradshaw | Dr. Max DeBryn |
| Tim Packham | Estate Worker with Bloodhound |
| Dan Trotter | Policeman |
| Kevin Vose | Missing Birdwatcher Moxem |