Another excellent Lucas Davenport case with a very smart opponent. Clara Rinker is smart, good looking and knows how to handle a gun...she was a professional hitman (woman?) for the St. Louis mob. She is back because someone from her old employers tried to kill her down in Mexico where she was hiding out. Lucas is called in to help track her down before everyone is knocked off. Lucas and Clara have a history from an earlier book. She respects Lucas and he returns the respect, even while he knows it won't go well for her unless she goes back into hiding. One of the best books in the Sandford series.