it's happening. >> heather collins couldn't get the news out of her mind.rning, april 24th, 2017, local police found the body of a young unidentified woman at a nearby soccer field. >> and, you know, immediately i'm worried about whose child this is. >> it certainly wasn't hers. at least that's what heather told herself, and yet, she was worried. she couldn't reach her eldest, halee, by phone. >> i called her friend ainsley and said, you know, "hey. have you heard from halee? " >> she's like, "i know you have her apartment key. can you drive over there and see what she's doing? " >> when ansley did, she saw halee's car parked outside the apartment, meaning halee must be inside. ansley put the key in the front door. >> i swung open the door. i was, like, "halee. " and i just started screaming her name. like, my stomach had dropped, and i was, like, "oh my god. " i was, like, "where is halee? " i was, like, "where could she be? " >> around the same time, halee's sister emilee was driving to work with a friend. suddenly, a sense of doom washed over her. >> i'm