When he was just seven years old Calyn Hoad risked his life to save his little brother Kya, aged four. Weekend after weekend we see it happen, young people over-dosing and dying at music festivals around the country. LSD, MDMA and others are not always what the dealers claim - and taking them is a game of Russian roulette. Sunday Night goes inside the festivals and into a highly emotional debate. Should we be testing the drugs our kids consume? Major Ben Carlin is the most remarkable Australian adventurer you’ve probably never heard of.