Hallowed Grounds - Patrick J O'Brian - Bog

During his last day as a detective on the sheriff's department, Jeff Lancaster works the gruesome homicide of a town elder in Southern Indiana. Despite opening his own business, thanks to a lottery win, Lancaster agrees to consult with his former department to see the case through.
It doesn't take long before another murder of a statesman occurs, and Lancaster's new theme park appears to have an eerie connection to the murders, and the town's past. Lancaster investigates the case through traditional means, learning that a murder transpired on his new property decades prior, providing valuable clues. With the help of a few allies he chips away at the past, beginning to realize he may not be dealing with a conventional killer.
If he doesn't find a way to stop the murders, the people who shaped his town may all soon be lying six feet underground.