The Disappearance of John Chau AKA the North Sentinel Island Mystery

John Chau went missing in November 2018 while on a missionary mission to North Sentinel Island. It is assumed and widely accepted that he was killed by the people on the island, not much of a mystery there. The mystery lies within the island and the people that inhabit the island, as the people have been living on the small island for what people believe to be over 60,000 years without any outside contact.