Sunny Randall is asked by her father, a retired cop to help him and the Boston PD to track down the returning serial killer called The Spare Change Killer.
Also, she faces her feelings for her ex-husband Richie, trying to find a way to make that work and learns more about her dad's relationship with her mother. In another subplot her best friend Julie gets into some trouble with a man who wants to have a trio with her and Sunny and doesn't take rejection well.
As always with Parker he gives us a fast read. It's kind of nice to see him tackle a serial killer, which he hasn't done before if I remember correctly. He's got a good handle on Sunny's character and offers some nice insights on the other characters. One of my favorites in this series.