"Never Go With Strange Children" public information poster, 1977
This public information poster was ubiquitous during the mid-1970s when there was a spate of cases involving adults being abducted from leisure centres, building sites and nudist beaches.
The police launched a public manhunt hoping that the perpetrator would be swiftly apprehended, but the crimes went unsolved for nearly two years. Terrified grownups would only go outside in groups of four or five and many pubs refused to open.
It was only when a police medium read the entrails of a recently sacrificed tramp that clues were finally unearthed, leading to the arrest of eight year old Steven Benson who had fed his victims to his tortoise, Admiral Twinkles.
When Steven was taken into state care and Admiral Twinkles escaped, it was suggested that the tortoise, which was an illegal immigrant, had used 'Manchurian Candidate' style psychological techniques to manipulate young Steven into subconsciously carrying out his instructions.