Picture a quiet February morning in western Pennsylvania. There's still snow on the ground, and the roads through Lawrence County are lined with bare trees and old farmhouses. It looks like any other winter morning. Inside one of those farmhouses, 26-year-old Kenzie Houk is asleep in bed. She's eight months pregnant, close enough to her due date that she and her fiancé were counting down the days. Downstairs, life is moving along like normal. Her two little girls are getting ready for school. Her fiancé has already left for work. His 11-year-old son is helping the girls get their coats on before walking one of them to the bus stop. Nothing seems out of the ordinary. But before that school day is over, Kenzie will be found dead.