Christina, Grant, Mimi and Papa make their way to Mount Rushmore to check out the colossal carving of four presidents. and find a mountain's worth of mystery, history, precocious prairie dogs, quirky clues, befuddling Badlands, and one Crazy Horse! One sassy sculptor! A batch of badlands! One store named Wall! Four story faces! And a Loooooong way down! 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, scavenger hunt and activities. Each Carole Marsh Mystery has Accelerated Reader Reading Levels, Lexile Measures, Fountas & Pinnell Guided Reading Levels and Developmental Reading Assessments Levels.