and susan berman became his media spokesperson. >> susan was very smart.and basically paint unflattering stories about kathie, how she probably just ran off with someone. >> the police did not have a firm grasp of what exactly had happened. and by the end of 1982, the it was a cold case. >> the durst case came to my attention in 1999. it was just so interesting how she was never found in all these years. and looking at the case, it reall piqued my interest. so i just started digging into things. >> two weeks ago, a fisherman discovered a headless, limbless torso here in the waters of galveston bay. >> so i get a call that a guy named bob durst has been arrested in galveston, texas, of all places, for murdering his neighbor. and first thing i ask, is it our bob durst? your kindness outshines your highs and lows. your strength can outlast any bad day. because you are greater than your bipolar i, and you can help take control of your symptoms - and ask about vraylar. some medicines only treat the lows or highs, once-daily vraylar is proven to treat depressive

susan and robert. >> they were my two best friends which is a very strange position. >> reporter: more than a decade after bermanb worth it? >> so nick recounts to lewin exactly what happened. >> bob said, i had to. it was her or me. i had no choice. >> so it's a very dramatic moment. llighteveryo devil you know" airs tonight at 9:00 eastern right here on abc and if you can't do it tonight, well, you got tomorrow on hulu, guys. >> we'll certainly be watching, thanks, amy. >>> let's head over to ginger. >> thanks, cecilia. this is what as storm chasers would call a low base on a thunderstorm out there in marietta, oklahoma. that time of year and we have the lightning flying over it as well. now watching for severe storms to move to the east. already this morning they've been popping up along the mississippi and alabama state line. from hoover and auburn, montgomery, that enhanced risk. but even if you are up in western kentucky, down to the florida panhandle like apalachicola you're involved in the risk today too. look what will happen ahead of it. we will touch on nearly record highs, southern new england has a