When Susan Kuhnhausen came home from work on a September evening in 2006, she noticed something felt…off. Minutes later, a man charged at her from the shadows with a hammer in hand. What followed was a shocking and harrowing fight for survival—and an investigation that uncovered a dark and twisted plot involving betrayal, manipulation, and a hitman with a violent past. This week, we tell the story of Susan and Michael Kuhnhausen, a case that forces us to ask: how well can you ever really know the person you married?