John Strickland Director Julia McKenzie Miss Marple Actor Ian Weichardt Young Lomax Actor Laura O'Toole Agnes Actor Robert Dunbar Young Count Actor Edward Fox Caterham Actor Mathew Horne Eversleigh Actor Adam Godley Lomax Actor Charlotte Salt Virginia Actor Jonas Armstrong Cade Actor Michelle Collins Treadwell Actor Anthony Higgins Count Ludwig Von Stainach Actor Dervla Kirwan Bundle Actor Ruth Jones Blenkinsopp Actor Agatha Christie Writer Paul Rutman Writer