An acclaimed screenwriter's spellbinding fantasy adventure series continues as a young boy and his friends encounter a magical mystery.

For Arlo Finch and the Rangers of Pine Mountain Company, summer camp is more than canoeing and hiking. It's also a chance to search for ancient forest spirits and discover mysterious messages encoded in tree bark. But when Arlo and his best friends Indra and Wu stumble upon clues about the long-lost Yellow Patrol, Arlo uncovers a stunning history that leads right back to his very own family.

Praise for Arlo Finch in the Valley of Fire

"A thrilling adventure full of magic and wonder. John August is a master storyteller." —#1 New York Times–bestselling author Ransom Riggs

"A fast, fun, and fearless tale. Arlo's adventures feel both completely real and entirely magical. I loved it!" ―#1 New York Times–bestselling author Ally Condie

"A masterful mix of mystery and adventure, set in a supernatural scouting troop. Reading this book made me wish I hadn't dropped out of Cub Scouts." ― New York Times–bestselling author Geoff Rodkey