David Attwood Director Tessa Peake-Jones Sandra Lyle Actor Aneirin Hughes Ted Lyle Actor Sid Mitchell James Lyle Actor Ann Mitchell Mulligan Actor Fred Pearson Harold Lyle Actor Ryan Davenport John Lyle Actor Jemima Rooper Julie Lyle Actor Sarah Alexander Maisie Actor Michael Bertenshaw George Saunders Actor Patrick Cremin Det. Sgt. Greg Lipton Actor Emily Corrie Theresa Gibbs Actor Michael Tucek Robbo Actor Craig Vye Guy Actor Joanne Leigh-Palmer Leanne Actor Tobias Menzies School Psychologist Actor Marcus Rogers Bobby Actor Elaine Donnelly Helen Gibbs Actor Charles Simon Terry Actor Neil Conrich DCI Lawson Actor Chad Gomez Adam Keys Actor Peter Gordon Neighbor 1 Actor Brian Parr Neighbor 2 Actor Sally Mates Hysterical Woman Actor Clive Hayward Custody Sergeant Actor Sam Troughton Police Constable Actor Sara Clee Hen 1 Actor Shenagh Govan Hen 2 Actor Tony Basgallop Screenwriter Hilary Salmon Producer David M. Thompson Executive Producer David Higgs Cinematographer Kristina Hetherington Film Editing John Harle Original Music Sarah Jane Morris Original Music Eve Mavrakis Production Design Mick Hurd Art Director Verity Hawkes Costume Design Joyce Nettles Casting