The Sunday Telegraph's crime reporter Lia Harris revisits the NSW town of Kendall, a year after the disappearance of William Tyrrell, and uncovers the perfect storm of bad luck that led to one of the most mysterious crimes in Australia's history.

Part 1: William Tyrrell's foster parents give the most comprehensive interview yet on his disappearance, including their regret at not writing down the number plates of two suspicious cars spotted near the house.