Across the Narrow Blue Line — Faith Martin

A shattered DI Hillary Greene returns to work following the death of her friend, Superintendent 'Mellow' Mallow, and is immediately plunged into another murder case. An old man is found dead by his terminally ill daughter. This leaves her with no one to care for her children after she's gone, and Hillary and her angry team are determined to find the killer. But Hillary, already far from being on her best form, faces solving her most tragic case to date whilst coping with two severe handicaps. Her new superintendent is a man she's crossed swords with in the past, and she knows that from now on she's going to have to watch her back. And to make matters even worse, her ex-Sergeant Janine Mallow is out for revenge on the man she, and everyone else at Thames Valley HQ feels is responsible for Mel's death. In the end, Hillary is faced with making a decision that could not only end her career, but could even put her behind bars!