These two Dutch students were staying with a host family in Panama, when they decided to take the family’s dog for a walk. Only the dog returned. A 10 weeks later, a woman discovered a blue backpack that had belonged to one of the girls, filled with sunglasses, cash, their passports, and most importantly, their cameras and cell phones.

When they took a look at the phone logs, they found that over 4 days, there were 77 attempts to call the police, and over half a dozen attempts to incorrectly unlock the phone. Even more disturbing were the photos on the camera. There were a few shots that the girls took, then the remaining ones were of dark forests, their belongings spread out on rocks, and even more terrifying, the back of one the girl’s heads, covered in blood.

Their remains were recovered shortly after, near where the backpack was found, with their bones showing signs of boiling and bleaching. So far, no one knows what really happened to those girls in the Panamanian forest.