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 Benjamin O'Mahony Guest Star Matthew Lewis Guest Star Anna Burnett Guest Star Ellie Haddington Guest Star Killian Scott Guest Star Jonas Armstrong Guest Star Lydia Wilson Guest Star Matthew O'Brien Guest Star Patrick Drury Guest Star Anna Koval Guest Star Clive Russell Guest Star Greg Brenman Executive Producer Will Gould Executive Producer Simon Vaughan Executive Producer