i felt susan berman was the key, always did. >> reporter: and the police did plan on interviewing susanerman. the problem was, they just waited a little too long. >>> coming up -- >> did susan ever tell you that she was afraid of robert? >> she did tell me she was fearful of him. >> my first thought was, "why didn't they listen to me? what were they waiting for, godot? >> when "dateline" continues. ve and save in more ways than one. for small prices, you can build big dreams, spend less, get way more. shop everything home at wayfair.com here, it all starts withello! hi!... how can i help? a data plan for everyone. everyone? everyone. let's send to everyone! wifi up there? uhh. sure, why not? how'd he get out?! a camera might figure it out. that was easy! glad i could help. at xfinity, we're here to make life simple. easy. awesome. so come ask, shop, discover at your local xfinity store today. >> reporter: by the autumn of 2000, westchester county's reinvestigation of the missing millionaire's wife, kathie durst, had been chugging quietly for months. when the story broke, durst found him