Christina, Grant, Mimi and Papa head 'em out! on a real covered wagon trek across the prairie, encountering adventure much as the pioneers of yore, and a mystery that you could say leaves Grant upChucking! This 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. This Carole Marsh Mystery has an Accelerated Reader quiz, a Lexile Measures, a Fountas & Pinnell guided reading level and a Developmental Reading Assessment.