Nicola Walker DCI Cassie Stuart Actor Sanjeev Bhaskar DS Sunil `Sunny' Khan Actor James Fleet Chris Lowe Actor Alex Jennings Dr Tim Finch Actor Kevin R. McNally James Hollis Actor Neil Morrissey Pete Carr Actor Peter Egan Martin Hughes Actor Jordan Long DS Murray Boulting Actor Carolina Main DC Fran Lingley Actor Lewis Reeves DC Jake Collier Actor John Scougall Steven Dale Actor Chris Lang Writer, Executive Producer Guy de Glanville Producer Andy Wilson Director Sally Haynes Executive Producer Laura Mackie Executive Producer