For some, it may be hard to believe there are still places that exist in the world where people don't give a second thought to leaving their doors unlocked. Small, safe, secure communities where the possibility of crime is the farthest thing from anyone's mind.20-year-old Mollie Tibbetts lived in such a place - the tight-knit farm community of Brooklyn, Iowa. But on a cool evening in the summer of July 2018, that was all about to change.