This Book Sparked a Worldwide Treasure Hunt in 1979

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British artist Kit Williams published Masquerade, a children's book which combined fantasy storytelling with a real-world treasure hunt. The 1979 book tells a whimsical story about the moon sending a golden hare sculpture as a gift to the sun, with a rabbit named Jack Hare acting as the messenger. However, Jack loses the gift on his journey, and readers are challenged to find it themselves, in real life—prompting a national treasure hunt across Britain. The treasure was real: an 18-karat gold hare adorned with jewels, hidden somewhere in the countryside.