Damage Control — Robert Dugoni

Dana Hill is accustomed to stress: she's a successful attorney at a prestigious Seattle law firm, the mother of a young daughter, and the wife of a busy, self-involved man. But her carefully-balanced world is rent asunder when she is diagnosed with breast cancer, her twin brother is beaten to death in an apparent robbery-gone-wrong, and she discovers that her husband is having an affair. Delaying medical treatment, Dana deals with her grief by throwing herself into the investigation of her brother's homicide. She soon finds that those connected to the murder are beginning to turn up dead, and someone masquerading as a cop is coldly and efficiently wiping out all signs of evidence....