The Daily Beast brings together here all three parts of its investigation into the fate of Kris Kremers, 21, and Lisanne Froon, 22, who went out for a brief hike near a mountain resort in Panama in 2014 and never came back.

Were they victims of a tragic accident or a savage crime? Amid what seems conflicting evidence and botched police work, theories have proliferated, some of them even involving the occult.

Now, thanks to a trove of documents and photographs revealing hitherto unexamined aspects of the case, we have been able to offer fresh insights into what happened in this celebrated mystery.