i did not kill susan berman.tember 2021, a jury found robert durst guilty of first degree murder. he was sentenced to life without parole. two months later, a grand 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 of 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. >> coming up -- a missing teenager, investigators wonder, is there a link? >> robert durst is a person of interest in this case. >> when dateline continues. hen dateline continues love can get a little messy... good thing there's resolve. love the love. resolve the mess. my mental health was much better. but i struggled with uncontrollable movements called td, tardive dyskinesia. td can