. >> not like halee rathgeber to go missing. coming up -- what had happened to halee? are you getting a sick feeling? >> i was sick all morning. it was so much anxiety. >> i just started screaming her name like, my stomach had dropped. and i was like, oh my god. where is halee? where could she be? >> i was freaking out. i was just like i got to go find my sister, something's wrong. i don't know what's wrong, but something's wrong. >> reporter: when "on the outskirts of town" continues. no one can deliver your mom's homemade short ribs. for starters, your mom doesn't have a restaurant. if she did, it would be impossible to get in. she'd become famous overnight. she'd get talked into franchising everything. and at that point, they wouldn't really taste like your mom's short ribs. no one can deliver your mom's homemade short ribs. that's why instacart helps deliver the ingredients. >> reporter: heather collins couldn't get the news out of her mind. that morning, april 24, 2017, local police found the body of a young, unidentified woman at a nearby soccer field. >> you kno

. >> not like halee rathgeber to go missing. >>> coming up, what had happened to halee. >> are you getting a sick feeling? >> i was sick all morning. it was so much anxiety. >> i just started screaming her name like, my stomach had dropped. and i was like, oh my god. where is halee? where could she be? >> i'm freaking out. i was just like i got to go find my sister, something's wrong. i don't know what's wrong, but something's wrong. >> reporter: when "on the outskirts of town" continues. e outskirts of town" continues when you need it most. it's non habit forming and powered by the makers of nyquil. new zzzquil ultra. when you really really need to sleep. ♪ ♪ 'tis the season to break tradition in a cadillac. don't just put on a light show—be the light show. make your nights anything but silent. and ride in a sleigh that really slays. because in a cadillac, tradition is yours to define. so visit a cadillac showroom, and start celebrating today. ♪ ♪ wondering what actually goes into your multi-vitamin? so visit a cadillac showroom, and start celebrating today. at new chapter its innovation