Ages 9-12 | Grade Levels 4-8 | Choose from 28 Possible Endings Written in the second-person, the reader is the hero of the story who makes decisions along the way. You are a mountain climber, headed to the Himalayas to find proof that the mysterious yeti really exists. When your best friend Carlos goes missing from base camp, the fate of the expedition is in your hands. Are the yeti out there, among the dangerous crevasses and icefalls? Is Carlos in trouble? A monsoon is moving in and you must decide quickly! Choose Your Own Adventure is the 4th bestselling children's book series of all time. Empowering generations of children through choice, it is widely commended for its appeal to reluctant readers.