Matthew Muller was a former Marine and Harvard-educated lawyer whose life spiraled into a series of bizarre crimes. In 2015, he broke into the Vallejo, California home of Denise Huskins and Aaron Quinn, abducting Denise and demanding ransom in what police initially dismissed as a hoax inspired by Gone Girl. Muller, who suffered from mental illness and believed he was a kind of vigilante, held Huskins captive for two days before releasing her.