| Adam Ewan | Les Grant |
| William Sebag-Montefiore | Professor Patrick Stanton |
| Anna Burnett | Linda Travers |
| Adam Mirsky | Richard Blake |
| Ray Emmet Brown | John Peckett |
| Roger Allam | DCI Fred Thursday |
| Sean Rigby | DS Jim Strange |
| James Bradshaw | Dr. Max DeBryn |
| Shaun Evans | DS Endeavour Morse |
| Anton Lesser | Chief Superintendent Reginald Bright |
| Caroline O'Neill | Win Thursday |
| Chirag Lobo | Asif Faradoon |
| Sara Vickers | Joan Thursday |
| Martin Hutson | Lawrence Yeager |
| Marion Bailey | Hilda Bruce-Potter |
| Matthew Marsh | Percy Walsh |
| Ben Bishop | Norbert 'Nobby' Hobbs |
| Estella Daniels | Elsie Watson |
| Jennifer Kirby | Dr. Gillian Nicholls |
| Abigail Thaw | Dorothea Frazil |
| Anthony Flanagan | Flavian Creech |
| Ty Hurley | Crime Investigation Department |
| Richard Price | Roland Parker |