This one is a parent’s worst nightmare. In 1984, Mike and Patty Bradbury were camping in Joshua Tree National Park with their three kids; Travis, Laura and Emily. When 8-year-old Travis needed to go use the restroom, he took 3-year-old Laura with him. The porto-potties were just beside the campground and he was inside of one for maybe a few min. By the time he was done, she was gone.

Over 250 people looked for her, and bloodhounds followed her footsteps, but soon all traces of her were lost. It was like she just disappeared into thin air.