Sophia Carr-Gomm Catherine Ross Actor Rebecca Benson Sally Henry Actor Gemma Chan Hattie James Actor Iain Robertson Jerry Markham Actor Douglas Henshall DI Jimmy Perez Actor Mark Bonnar Duncan Hunter Actor Erin Armstrong Cassie Perez Actor Julie Graham Rhona Kelly Actor Gerda Stevenson Maria Markham Actor Steven Robertson DC Sandy Wilson Actor Anne Kidd Cora McLean Actor David Hayman Joe Dalhousie Actor Alison O'Donnell DS Alison 'Tosh' McIntosh Actor Neil McKinven Andy Belshaw Actor Matthew Zajac Alex Henry Actor Stewart Porter Sgt Billy McBride Actor Forbes Masson Reg Gilbert Actor Tunji Kasim Hugo Scott Actor Henry Pettigrew Iain Redford Actor Finn Den Hertog Drew Actor John McKay Director Stewart Svaasand Director Dave Moore Director David Kane Writer Richard Davidson Writer Gaby Chiappe Writer Sue de Beauvoir Producer Chris Aird Executive Producer Elaine Collins Executive Producer Peter Gallagher Producer Grace Hartley Executive Producer