Bursting with fun, this sticker and activity book introduces kids to the characters, heroes, and adventures from Xavier Riddle and the Secret Museum!Based on the children's book series ORDINARY PEOPLE CHANGE THE WORLD by New York Times bestselling author Brad Meltzer and illustrator Christopher Eliopoulos, the series will introduce kids to inspiring historical figures and the character virtues that helped them succeed.Games, activities, and stickers fill this activity book starring Xavier, Yadina, Brad, and historical figures throughout history. Join along in their latest adventures through the Secret Museum!