DCI Lesley Clarke is settling into her new job in Dorset's Major Crimes Unit, and becoming accustomed to a slower pace of life.
But then she's called in to solve the murder of a woman with links to Lesley's new girlfriend.
Has Lesley made a grave error of judgement? Can she track down the killer or does she already know her? And how will Lesley's new colleagues react when she tells them she's dating a suspect?