Storm Prey by John Sandford

It was supposed to be an easy heist.  Some local guys planned to break into the hospital pharmacy and steal their drugs.  It went off as planned except for two things.  The first was that one of the guys got antsy and kicked one of the pharmacists and he died.  The second was that outside the pharmacy, Weather Davenport, Lucas Davenport's surgeon wife, saw the robbery and the face of at least one of the robbers.

From that point, it got complicated.  The original two leaders, local bar owners, now had hired help who could be identified.  They took care of that by hiring a contract killer, Cappy, to eliminate the guys who could be identified.  But that still left Weather as a witness and the gang decided that she must be eliminated as well. 

But Lucas and his friends aren't about to let that happen.  The various police departments involved all owe Lucas and Weather goes nowhere without a police guard and usually several guards.  In the meantime, Cappy and the doctor who helped set the robbery up, got acquainted and realized they were a lot alike, if you count being cold-blooded killers.  Can Lucas find the gang before they kill others and especially can he protect Weather?

This is the twentieth novel in the Lucas Davenport Prey series.  If you like the series, this one is especially interesting.  It's always fun to see how quickly Lucas can put together the clues and how well he understands the predators he spends his life chasing.  This book is recommended for mystery readers.