Mimi and Papa speed away to London, England in their little red and white airplane, The Mystery Girl. Tagging along are grandchildren Christina, 10, and Grant, 7. Uh-oh, Grant spots a big problem with Big Ben...and he and his sister, along with their two new best friends, George and Maggie, take a whirlwind tour from the top of the Eye, up the Thames River, down into a dungeon, and more -- in search of clues to solve The Mystery of Big Ben! This mystery incorporates history, geography, culture and cliffhanger chapters that keep kids begging for more! This mystery includes SAT words, educational facts, fun and humor, Built-In Book Club and activities. This book includes a map, inline glossary definitions, and lots more! This Carole Marsh Mystery also has an Accelerated Reader quiz, a Lexile Level, a Fountas & Pinnell guided reading level and a Developmental Reading Assessment.