From a fruit picker who falsely claimed he killed Nancy, to a person who meditated on Beaumaris Beach until “visions” came, and even a red jacket planted as false evidence after Victoria’s murder, these cold cases have led to plenty of dead ends and bizarre false leads. Retired detective Bob Coad, author Melanie Calvert, and current Detective Inspector Kim Steven explain why these cases have led to so much fascination - and so much speculation.