Zara McDermott experiences Ko Phangan's famous Full Moon Party, but beneath the cheap cocktails, music and fire shows, there's danger lurking as the medical team treat a possible drink-spiking victim. She then travels to Phuket and experiences a taste of Thailand's luxury lifestyle. But she also learns how dream holidays can quickly go wrong, hearing the case of a British holiday-maker who died on the island - and whose family is still searching for answers