Secret Prey (Lucas Davenport #9) 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 that easy.