With this, rather slim, hardback a whole publishing phenomena was launched - the picture puzzle book which could lead you to a real buried treasure. Masquerade was first published in 1979 by Jonathan Cape (U.K. edition) and garnered a massive amount of media attention and publicity.
Masquerade contains prints of fifteen painted pictures and is accompanied by a short story about Jack Hare. Jack is on a mission to find the Sun and give him a riddle and a gift from the Moon. The pictures and their painted borders contain the key clues with which to solve the puzzle, alongside some visual jokes and red herrings. Within the text are other riddles that are amusing to solve and easy enough to be read by younger children. The story itself is a fun, short, read with its featuring of Sir Isaac Newton, other strange human and non-human characters, flashes of humour in the dialogue and a mix of fable, myth and science.
I absolutely adore this book, although at the time that it was published I was a bit too young to really know how to solve the puzzles for the treasure hunt. The gorgeous paintings, the idea of a hidden treasure, seemed fantastical to me and what books should be all about.
The treasure itself, the golden hare necklace, was found in 1982 and is currently owned by a private collector; today the book remains as a curiosity item and getting hold of an original copy can be pricey. It is entirely worth the effort if you enjoy the rich style of Kit Williams' art and the inventiveness of picture puzzles (as a mental exercise).
The solution to the puzzle, also of Kit William's second treasure-related book (known as 'The Bee Book'), can be found online as well as other interesting - sometimes dramatic, real-life stories based around the hunt for the golden hare.