In 2003 in Erie, Pennsylvania, a robbery gone wrong and a terrifying public murder capture the nation's attention, and a bizarre collection of Midwestern hoarders, outcasts, and lawbreakers play cat-and-mouse with the FBI. Eventually, a middle-aged mastermind named Marjorie Diehl-Armstrong — once a town beauty, now a woman grappling with mental illness — is arrested. But 15 years later, Evil Genius proves there's more to the conspiracy and murders than was ever thought.