After being released from jail, notorious paedophile John Davies admits to the abduction and murder of a child 25 years previously. Suspicious of his motives, the detectives reopen the unsolved case in an unusual attempt to prove his innocence, reinvestigating the boy's disappearance while on a demonstration with his left-wing activist parents. Guest starring Adrian Schiller (Being Human) and Samantha Bond (Outnumbered)
Quest roles:
Anthony Calf(Deputy Assistant Commissioner Robert Strickland), Susan Jameson(Esther Lane), Adrian Schiller(John Davies), Elijah Baker(Hoodie), Samantha Bond(Anne Gorton), Kevin McNally(Fred Blackledge), Doon Mackichan(Gillian Withall), Claire Cage(Older Woman), Simon Ludders(Richard - MI5), Neil Roberts(Anthony Vernon), Connie Hyde(Karen Vernon), Jamie Belman(William Withall), Nicholas Tizzard(Simon Withall)