In summer 1969, 18-year-old Stephanie Casberg vanished after a waitressing shift in Milwaukee and was found dismembered near a condemned bridge—her methodical killer leaving detectives chasing suspects for 55+ years, from coworkers to a child predator claiming responsibility, until a Crime Junkie episode recently added a new lead. Stephanie's dismemberment showed surgical precision and deliberate joint cuts, indicating the killer possessed anatomical knowledge and patience, suggesting this was not a crime of passion but calculated execution. Michael Bartelt, a cook at the restaurant where Stephanie worked, lied about his work schedule and presence that night—he fabricated a Hawaii trip story that never happened and changed his account of when he left, making him a primary suspect decades later.