Hannah and David were both from England on holiday with their mates when they met in Koh Tao, party and became fast friends. On the evening of September 14 going into the 15th there was a full moon party. Sometime during that night Hannah would be viciously raped and murdered and David killed. Many elements of the case are a cause of contention, including the conviction of two Burmese illegal immigrants, Zaw Lin and Wai Photo.