Guest Stars Erin Shanagher as DS Karen Hobson Andrew Dowbiggin as DS James Clarke Thomas Law as DC Eddie Martin Leo Ashton as Oliver Marshbrook Adam Hussain as Josh Nubhai Ciara Adams as Claire Regan Amy James-Kelly as Grace Marshbrook Jack Archer as Jamie Marshbrook Arian Nik as Theo Anvari Aleksandar Mikic as Delivery Man / Viktor Zima Sean Croke as DC Dave Carter Kelcie Atkinson as Cass Hammond Melanie Ash as Sophie Blezzard Enid Dunn as Mrs Canovan Angela Bain as Mrs Ollerenshaw