Christina, Grant, Mimi, and Papa travel to Wyoming's Devils Tower and climb into a "towering" mystery involving Native Americans, dinosaur fossils, precocious prairie dogs, fascinating footprints, Unidentified Flying Objects, and gulp aliens??? One pouncing prairie dog! One ropeless rock climber! One angry chief! One close encounters! And hundreds of reasons to run. 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.