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dead man is found on the moors with no clues to his identity until a woman called Maeve comes forward to name him as former lover Michael Greenholme, whom she last saw fifteen years ago. Janet and her colleagues interview farmer Callum Pritchard, who recently employed Michael, but he bolts and dies when his car overturns. A search of Pritchard's farm reveals three men imprisoned as slaves, opening a new line of enquiry when a simple employee of Pritchard is brought in. At the same time Janet informs Gill's friend DSI Julie Dobson that she is concerned about her boss drinking at work whilst Rachel learns from her sister that their mother has just died.

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