Sharon D Clarke DCI Ellis Actor Andrew Gower DS Chet Harper Actor Charlotte McCurry DC Kate Trent Actor Allison Harding ACC Alison Leighton Actor Mark Addy Elliot Quinn Actor John Hollingworth DS Malcolm Oliver Actor Dorothea Myer-Bennett Lucy Quinn Actor Matilda Freeman Mackenzie Quinn Actor Joel Morris Joseph Ward Actor James Doran Peter Barron Actor Kirsty Bushell Natasha Scope Actor Sonny Ashbourne Serkis Joshua Quinn Actor Hannah Chinn Avery Barron Actor Natalia Kostrzewa Ludmilla Nowak Actor Sophie Stanton Tina Marshall Actor Sonny Walker Kelvin Jones Actor Florian Rafuna Christian Kalonas Actor Julia Krynke Celina Pusch Actor Karyna Khymchuk Katja Vogel Actor Caroline O'Neill Rosie Watts Actor Michele Buck Executive Producer Lucy Raffety Executive Producer Sian Ejiwunmi-Le Berre Executive Producer, Writer Catherine Mackin Executive Producer Bea Tammer Executive Producer Sebastian Cardwell Executive Producer Paul Testar Executive Producer Chris Martin Producer Oliver Frampton Writer Sam O'Mahony Director Edward Bazalgette Director Maria Ward Writer