Anne-Marie Duff Tracy Daszkiewicz Actor Rafe Spall DS Nick Bailey Actor MyAnna Buring Dawn Sturgess Actor Mark Addy Ross Cassidy Actor Annabel Scholey Sarah Bailey Actor Johnny Harris Charlie Rowley Actor Stella Gonet Caroline Sturgess Actor Clare Burt Mo Cassidy Actor Darren Boyd Supt. Dave Minty Actor Jill Winternitz Yulia Skripal Actor Wayne Swann Sergei Skripal Actor Declan Lawn Writer Adam Patterson Writer Saul Dibb Director