Jem's father, a scientific genius, turns himself into a nine-foot orangutan. When their landlord suggests that they leave, they pack their belongings onto a huge wagon and set out on the ultimate adventure: to find the last resting place of Leonardo da Vinci, who, according to his last notebook, may not have died in Italy. They are joined by an old Indian woman, and the threesome's adventures lead to the most unlikely of places--and meetings. Tidbits of science, fun facts about da Vinci and his works, and B.B. Wurge's trademark wacky humor, minimalist illustrations, and lessons on the importance of family make this third novel as exciting as the last two

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