Claire tells Hind that her suspect has been calling her and threatening to kill more victims if the original murderer is not apprehended and believes that they need help. Hind disagrees but is suspended following complaints by the Hardings so he tries a little sleuthing of his own, helped by young sergeant Boyce, establishing a context for the original slayings. However Claire discovers that two killers may have been at work, one in the late 90s and now one in the present. With what she knows will she be in time to save another potential victim?

Self-exiled ex-constable Claire Church has fled her dark past by escaping to the remote Western Isles with her partner, Norrie. But no matter how far she runs, she can't escape the shadows cast by her history, and as decades-old bodies are unearthed on a Manchester building site, the darkness threatens to fracture her life once more.