White sand beaches, untouched jungles, cloudless skies. People come to Thailand to get away from it all. But the seemingly idyllic paradise of Koh Tao, once known as Turtle Island, has turned from beauty to horror as a string of brutal murders and unexplained disappearances have rocked the community. Government cover-ups, corrupt police, bungled investigations, silenced natives, cults. Locals and tourists have come to known this place as: Death Island.