You won't find Knicksport, Long Island by any map, GPS, or main road. To get there, you must lose your way along lonely, tree-shadowed back roads that wind through grooves of time and reality, byways that trace the glacial hills, marshlands, and wooded pockets tucked into the suburban landscape growing like verdigris clinging to rock. You must step out of the daylit world into a town haunted by the lost and the missing, the hidden and the hunted-because...