Guest Stars Idris Elba as Robert Gabriel James McAvoy as Gowan Ross Ron Donachie as John Ross Don Gallagher as Inspector Macaskin Julian Wadham as David Sydeham Camilla Power as Joanna Sydeham Ronald Pickup as Sir Stuart Stinhurst Yvonne O'Grady as Joy Gary Cross as Sergeant Lonan Naomi Frederick as Elizabeth Barbara Horne as Solicitor Ravin J. Ganatra as Forensic Pathologist Jonathan Firth as Rhys Davies Jones
