Matthew Macfadyen Detective Inspector Edmund Reid Actor Jerome Flynn Detective Sergeant Bennet Drake Actor MyAnna Buring Long Susan Actor Adam Rothenberg Captain Homer Jackson Actor Charlene McKenna Rose Erskine Actor Jonas Armstrong Guest Star Killian Scott Guest Star Lydia Wilson Guest Star Anna Burnett Guest Star Benjamin O'Mahony Guest Star Matthew Lewis Guest Star Joseph Mawle Guest Star Ellie Haddington Guest Star Laurence Foster Guest Star Greg Brenman Executive Producer Will Gould Executive Producer Simon Vaughan Executive Producer