Nicola Walker DCI Cassie Stuart Actor Sanjeev Bhaskar DS Sunil `Sunny' Khan Actor Trevor Eve Sir `Frank' Philip Cross Actor Bernard Hill Father Robert Greaves Actor Ruth Sheen Lizzie Wilton Actor Tom Courtenay Eric Slater Actor Lorraine Ashbourne Di Tessa Nixon Actor Mark Bonnar Colin Osborne Actor Rosie Cavaliero Marion Kelsey Actor Chris Lang Writer