Guest Stars Claudie Blakley as Louise Sutton Stephen Wight as DC Clive Grace Steffan Rhodri as DC Neil Jones Katie Lyons as DS Jo Brunt Philip McGinley as DS Norman Griffths Nicholas Burns as DI Richard Ambrose Jay Taylor as DI Chris Saunders Cornelius Booth as DCI Dave Cobb Steve Furst as DC Gary Cunningham James Puddephatt as DC Gary Fuller Peter Forbes as DCS Andy Murphy Celyn Jones as Levi Bellfield Co Starring Russ Bain as Senior Surveillance Officer Anna Burnett as Kat Sutton Tracy Wiles as Monica Christopher Fulford as DI Brian Marjoram Temi Wilkey as PC Olivia Evanson James Thorne as Surveillance Officer #1 Hannah Rae as Sarah Knight Jemima Woolnough as Tina Paul Casar as Geoff Barton Polly Dartford as Surveillance Officer #2 Lloyd Hutchinson as Bob Cox James Corrigan as Steve Uncredited Ty Hurley as CID