Its been almost a year since Greenburys last murder. Detective Peter Decker has been enjoying the slower pace of life in upstate New York... until two local kids , find a dead body in the woods.

Identifying the victim takes Decker and his former partner Tyler McAdams into the cryptic world of mathematics at Kneed Loft College: a sphere of scheming academics - including a beguiling student who sets her sights on McAdams - and a dangerous underworld.

It will take all of Deckers wits and McAdamss intellect to solve a twisted tale created by depraved masterminds, and then make it out alive .