Secret Prey by John Sandford

The company chairman lay dead in the woods, his orange hunting jacket punctured by a bullet at close range. Around him stood the four executives with whom he had been hunting, each with a reason not to be sorry about the man's death.

A classic murder mystery, it would seem; the kind where the detective gathers everyone together at the end and solves the case. But Lucas Davenport knows it's not going to be easy. There are currents running through this group, hints and whispers of something much greater than the murder of a single man. Some time soon, unless he could stop it, there would be other deaths - and Davenport can't help but wonder if maybe the final death might be his own