This is the story of one perfect beach. There are hundreds of pristine white-sand beaches along the coast of Thailand, but one tiny bay, almost hidden by limestone cliffs, has obsessed the world. For years, people would come in staggering numbers hoping to step into "paradise". One day last year, it was shut down. In the 1990s a film crew decided that Maya Bay, on the island of Phi Phi Leh in sout