In 1920, readers across America fell in love with the childhood diary of Opal Whiteley, a young girl from a small logging town in the northwest. The diary, which chronicled Opal's adventures in the forests of Oregon at the age of seven, was hailed as a revelatory and mystical portrait of a child's relationship to God and the natural world. It became an overnight sensation, and Opal-beautiful, charming, and twenty years old-quickly became one of the...