Описание книги
Amy and Christopher are twins AND international sleuths. Their eco-photographer parents travel often. So the twins fly to meet them.<br /> <br />Christopher loves drawing. He draws people and places. And often he notices unusual clues.<br /> <br />Amy reads and thinks quickly. She also collects coins, stamps, stickers, phone cards and clues.<br /> <br />Together they solve mysteries in the air and at international airports.