When the Mystery Girl puts down in Boot Hill, the die is cast! New friends - and enemies: some real, some perhaps not, foil the kids attempts to solve the mystery of why living, breathing towns become ghost towns. Each mystery incorporates history, geography, culture and cliffhanger chapters that keep kids begging for more! Each mystery includes SAT words, educational facts, fun and humor, built-in book club and activities. Each Carole Marsh Mystery also has an Accelerated Reader quiz, a Lexile Level, and a Fountas & Pinnell guided reading level.