Susan Berman and Robert Durst met while attending programs at the University of California, Los Angeles. Years later, Durst and his wife Kathie appeared to have a fairytale life until her disappearance in 1982. Stream the full 20/20 special “The Devil You Know” - now on Hulu: https://abcn.ws/3DlnzKm. Read more: https://abcn.ws/3KZwx4m. | ABC 20/20

"It was ugly,” Photojournalist Rick Egan recalled the “contentious” exchange between Susan Powell’s father and Josh Powell’s father outside the grocery store where Susan’s family organized an awareness campaign for the missing mother in August 2011: “I was waiting for the cops to come and haul one of them away." #ABC2020 http://abcnews.com/2020 | ABC 20/20

The Powell family included two children, Charlie and Braden. After not hearing from them one day in December 2009, their concerned family calls the police, who find strange evidence in their home. Stream full #ABC2020 episodes on Hulu: https://abcn.ws/3DlnzKm | ABC 20/20