Timothy Spall John Chapel Actor Gwyneth Keyworth DS Janie Mallowan Actor Steffan Rhodri DCI Clarke Actor Alexandria Riley Helen Baxter Actor Rithvik Andugula DC Evan Chaudhry Actor Abby Vicky-Russell Gemma Mason Actor Robert Wilfort Owen Skinner Actor Ben Rufus Green Andy Ashton Actor Nadia Wyn Abouayen Aisha Lanzetta Actor Liz Carr Fiona Challoner Actor Mike Bubbins Cliff Rickard Actor Simon Hynd Director Paul Doolan Writer Madeline Addy Executive Producer Josh Cole Executive Producer Nikki Wilson Producer Sion Trefor Music