In this part all five (Julian, Dick, George, Anne and Timmy) meet a new friend called Nobby and his chimpanzee "Pongo". There's a secret under the ground where the Five have their caravans and the secret is of Nobby's uncle Tiger Dan and his friend Lou. They have had troubles with Tiger Dan and Lou. The mystery starts in one day when the children and Timmy were commanded to camp somewhere else with their caravans. But sooner or later, the two "evil characters" - Tiger Dan and Lou - show up and try to tell them to move. what is going on??...
The paperback reprint of Smullyan's most successful book of puzzles--a mind-bending, pleasurable romp through the world of logic. For all ages and all levels of difficulty, these puzzles range from those that can be solved in minutes to those that will beguile for hours.
An exciting collection of projects, including a griffin, centaur, sea serpent, wyvern, and 12 animals from the Chinese zodiac: rat, ox, tiger, rabbit, snake, monkey, and 6 others.
