A child has simply vanished, leaving behind no forensic evidence whatsoever.
William Tyrrell's life wasn't as straightforward as most young children. As a baby, he had been removed from his birth parents' care and placed into a foster home.
Police kept returning close to home when looking for suspects in the disappearance of William Tyrrell. One man in particular has become synonymous with the crime - a local washing machine repairman.
If it wasn't any of the suspects police had concentrated most of their efforts on, then we are left with the terrifying possibility that this abduction was by the most evil in our society.
Michael Usher
Host
Caroline Overington