i think you felt most connected to buwa bundy's last murder, the abduction of a 12-year-old, kimberly leach, because you were 12? >> yeah. i mean, it's hard to find words for how devastating it is, the loss of this girl and the things that he did to her. >> doesn't matter how much time goes by, hearing the details of the case is so awful. so many questions among them. why did the mother and daughter believe they were spared by ted bundy? >> they want to believe he cared for them, but he realized they were his cover. he could lead the double life, go on undetected for years. >> amy, thank you. amy will have much more, an extraordinary "20/20" tonight at at eastern. >>> much more ahead tonight on friday. the chaotic scene in new york at this hour. the protest erupting during rush hour. we have late reporting. >>> new images tonight of the high rise rescue. a 25-story apartment building on fire. the man clinging to a ledge. >>> the horrifying moment, the stadium collapse. workers preparing it for demolition when it suddenly gives way on its own. a lot more news ahead. i'll be right back. ♪ roc

think that you felt most connected to was bundy's last murder, an abduction of a 12-year-old kimberly leachmean, it's hard to find words for how devastating it is, the loss of this girl and the things that he did to her. >> i know you've asked yourself this a million times. why do you think he spared y? >> whatever transpired at the beginning of his interaction with my mother put her in a different category, and i think our placement in his life kept us safe. people knew he was involved with us. >> so liz and molly say eerily the reason why they think they're still alive to tell the story is because he knew if he did anything to them, the finger would be pointed directly at him and he wouldn't be allowed to keep on with his killing spree and he had a compulsion, they really believed, to just -- you can see how it ramped up. it was something horrific to witness and yet at the same time you don't want to believe the unthinkable about someone who you love, who you've had in your home sleeping there with your little girl. >> what a thing to live with all these years. >> it is a lot to live with