A chance encounter prompts Matthew, a friend of Charles, to telephone and guide Charles to page twelve of the day's newspaper. The newspaper has issued a challenge in the form of a mathematics competition. Investigating further, Charles learns that the mathematics competition is based on an obscure branch of mathematics. Speculation and intrigue abound as Charles employs his formidable skills with numbers. A most delightful, albeit swot territory romp, 1930s 1:12 scale.
Having discovered a treasure map, Charles and Elizabeth make passage for Shipwreck Island. Not knowing what they will unearth, Charles and Elizabeth duly follow their treasure map across treacherous territory - will X indeed mark the spot? A most intriguing read, 1930s 1:12 scale.