Harry Michell Director, Screenwriter Harry Melling Tim Actor Anna Maxwell Martin DCI Brough Actor Derek Jacobi Father Enoch Actor Roger Allam Professor Huxley Actor Vinette Robinson Imelda Actor Tom Brooke Vic Actor Flora Spencer-Longhurst TI Hodge Actor Sheena Bhattessa Sarah, News Anchor Actor Matthew Steer Martin Silver Actor San Shella Male News Anchor Actor Will Barton Walker, Charles Actor Helen Simmons Percy Actor, Producer Dominic Geraghty Woman at Pub Actor Jamie Fraser Screenwriter Farah Abushwesha Executive Producer Ben Bond Executive Producer Andy Brunskill Executive Producer Hugo Heppell Executive Producer Sverre Sørdal Cinematographer Dylan Holmes Williams Film Editing Arran Price Original Music Debbie Burton Production Design Paul Cowell Art Director David Wolfe Costume Design Daniel Hubbard Casting