Dispised serial killer Brian Wicklow (Matthew Kelly) is the only one who can locate where the body of a young woman is. But he's spent most of his incarceration playing mind-games with the authorities and talking in riddles. But there may finally be a man who can get to him: a former convict (John Hannah) with a tormented past of his own.

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DS Granger turns to Wicklow for help whilst investigating a murder supposedly committed by a boy with learning difficulties, which has been overturned on appeal. But when Wicklow is stabbed, Granger suspects he is playing games with her.

DS Granger's relationship with Jake Osbourne is threatened when she investigates the murder of an Army corporal, who is shot dead during an exercise involving no live ammunition. Does Jake hold vital information?

DS Granger comes face to face with Brian Wicklow once more when a young boy named Jake Osbourne is abducted from a shopping centre - and not one for believing in co-incidence, discovers that Wicklow's sister is involved in the kidnap.