Marsha Thomason Mel Palmer Actor Ophelia Lovibond Lucy Waite Actor Rory Kinnear Stewart Dean Actor Marc Warren Joseph Walker Actor Nina Sosanya Sarah Templar Actor Denise Gough Martha Wallace Actor Anton Lesser Samuel Waite Actor Ciarán McMenamin Daniel Hughes Actor Sasha Behar Salma Al Fulani Actor Diana Kent Helen Waite Actor Laura Greenwood Leah Wallace Actor Darwin Shaw Khalid Al Faluni Actor Connor McIntyre Michael Wallace Actor Lucinda Raikes Pathologist Actor Niall Macgregor Mark Moore Actor Conor Grimes Roger McGovern Actor Mark Asante Phil Mead Actor Breige Roche Catherine Tyce Actor Aftab Sachak Fareed Iqbal Actor Sean Hanrahan Peter Templar Actor Ayça Ayabakan Marissa Actor Harry Bradbeer Director Oliver Brown Writer Robert Cooper Executive Producer Patrick Spence Executive Producer Kate Triggs Executive Producer Richard Broke Producer Srdjan Kurpjel Music Marios Takoushis Music Jan Jonaeus Cinematographer John Gow Film Editor Rachel Freck Casting