While staying on the Isle of Wight last weekend, I came across this book on the second-hand bookshelves at Godshill church. It was published in 1983 and was called, Who Killed the Robins Family?
The idea of the book was that you read the story, which told of the murders of several members of the fictional Robins family, work out who you thought was the perpetrator before submitting your answer by April 1984 in the hope that you'd win the £10,000 prize money.
While the prize money may no longer be on offer (I assume someone did win it back in 1984!) it's not too late to take the challenge, should you wish to, as there are still copies of the book available on Amazon.
To find out more go to the books page in the menu above or click on the image.