Mercy - What turns a carer into a killer?

The first book in the Morden series introduces DI James Morden and his journalist sister Kat and explores the dark secrets of Bath and its surrounding towns in a twisty crime thriller involving workplace factionalism in a state-of-the-art residential home, political corruption and a national debate on assisted suicide. A string of mysterious killings link three people. Harriet Clarke is the founder of a state-of-the-art residential home who's given a unique chance to expand her business and make a fortune. Kat Morden is an increasingly disillusioned journalist who uncovers discrepancies with a resident's death and risks her life and her new relationship to uncover a front-page story. Meanwhile DI Morden's police career is on the line when his values clash with a police force at breaking point. Against the backdrop of workplace factionalism, political corruption and a national debate on assisted suicide will DI Morden uncover the murderer before more residents die?