keith morrison: in september 2021, a jury found robert durst guilty of first degree murder. rand jury in new york indicted him for the death of his first wife, kathleen durst, but a jury would never hear that case. in january 2022, robert durst died in a california hospital while serving his life sentence. he was 78. and in a final twist, john lewin, the prosecutor in the berman case, said that because durst was appealing that verdict at the time of his death, under california law, his conviction will be vacated. robert durst may be gone, but the mysteries remain. andrea canning: coming up, a missing teenager. investigators wonder, is there a link? andrew mills: robert durst is a person of interest in this case. andrea canning: when "dateline" continues. touch can mean so many things. even for people with moderate-to-severe eczema. touch can make two feel like one. or simply be a helping hand. dupixent can help you stay ahead of eczema as you welcome the feeling of touch. dupixent helps block a key source of inflammation inside the body that can cause eczema to help heal your