Certain Prey

I loved this book written by John Sandford. Clara Rinker was raped by a co-worker when she was only 16-years-old and she gets revenge on the depraved man. Someone hears about her reputation and takes her on as a paid assassin. Later she is hired by a famous defense attorney and the two women kill a few people and try to avoid being caught by detective Lucas Davenport. This is the 10th novel in the series.