V For Vengeance by Sue Grafton 

Las Vegas, 1986. A young college graduate is murdered after coming into contact with nororious criminal Lorenzo Dante.
Two years later a private investigator Kinsey Mallone helps to apprehend a shoplifter – Audrey Vance – in a shopping centre. Events take a much darker turn when Audrey’s body is discovered at a local suicide spot. Unable to believe that she took her own life, Audrey’s fiance hires Kinsey to investigate.
Meanwhile Lorenzo Dante has begun to grow weary of his life in organised crime and frustrated with his violent and impulsive younger brother Cappi. As Kinsey’s inquiries reach a dramatic head, it becomes clear that she and Dante have one thing in common – they must be careful whom they trust….