When Jake, thirteen, and Taylor, eleven, learn that their mother is still alive but facing grave danger if they do not return the money they took from her abusive boyfriend, Bull, they leave their father, who is not eager to help, and set off on their own again for a late autumn trek from Wyoming to Pittsburgh.

"The Wilder Boys are excited to be spending part of their summer at a wilderness camp. Jake is going to be working as an assistant counselor, and Taylor will be in his cabin. Along with the rest of their group, they'll spend two weeks honing their skills and learning to work together before a multiday trek traversing woodland, mountain, and desert terrain during a team-based competition. But no amount of training could have prepared them for what...