Mother of three, Leanne Wellings, disappears whilst out looking for flowers.
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Leanne's mother, Barbara, makes an emotional appeal for her daughter's return.
Barclay has to defend the course of his enquiry to an independent police review.
Leanne's body is discovered in a lake, and the family begins to turn on each other.
Leanne's murder is eventually solved, but can the family get on with their lives?