Soopens THE GENIUS FILES. For twelve-year-old Coke McDonald and his twin sister Pep, this summer's family cross-country RV vacation is nothing toget excited about...until Coke and Pep are chased off a cliff, locked in a burning school, and start receiving mysterious messages in codes and ciphers. Mom and Dad are lovably kooky and hilariously clueless, butCoke and Pep are more than up to the task. From California to Wisconsin, it's a race against time to find out who's after them, who's leaving the notes...and just what being a part of The Genius Files entails!