Overview: As many young Canadians head off for spring break holidays, do they face unexpected and potentially lethal dangers – in their hotel rooms? When two Canadian sisters turned up dead in a Thailand hotel in 2012, authorities suggested everything from drugs to food poisoning. But an updated investigation by the fifth estate points to new evidence that a highly toxic pesticide used in holiday hotels in Asia to control bedbugs may have caused their deaths. And host Linden MacIntyre digs into the mystery of two other young tourists who died suddenly while travelling in Vietnam.