Sharon D Clarke DCI Ellis Actor Andrew Gower DS Chet Harper Actor Charlotte McCurry DC Kate Trent Actor Mark Addy Elliot Quinn Actor Dorothea Myer-Bennett Lucy Quinn Actor Matilda Freeman Mackenzie Quinn Actor Lisa Ambalavanar Abi Marshall Actor Stephen Tompkinson DCI Chalmers Actor Sonny Ashbourne Serkis Joshua Quinn Actor Judy Flynn Wendy Pyke Actor Jack Bandeira Tim Selby Actor Natalia Kostrzewa Ludmilla Nowak Actor Sophie Stanton Tina Marshall Actor Florian Rafuna Christian Kalonas Actor Julia Krynke Celina Pusch Actor Karyna Khymchuk Katja Vogel Actor Caroline O'Neill Rosie Watts Actor Allison Harding ACC Alison Leighton Actor Michele Buck Executive Producer Lucy Raffety Executive Producer Sian Ejiwunmi-Le Berre Executive Producer Catherine Mackin Executive Producer Bea Tammer Executive Producer Sebastian Cardwell Executive Producer Paul Testar Executive Producer Chris Martin Producer Sam O'Mahony Director Maria Ward Writer