Hot Minnesota Sex Death by M. R. Nesheim

Nede, a sexually reserved utopia, is shaken to its core by the loss of its moral and spiritual leaders, creating doubt and panic in its citizens. The fate of the town falls into the hands of two brothers, Oddmund a reclusive shut-in and the town's golden boy Inger who lacks both confidence and ambition. A mischievous presence returns as the town spirals into confusion and sexual chaos.