In the tradition of Into the Wild comes an instant classic of outdoor literature, a riveting work of uncommon depth. I'm planning on doing 4 days in the jungle. It should be difficult to get lost forever: These were the haunting last words legendary adventurer Roman Dial received from his son before the 27-year old disappeared into the jungles of Costa Rica. This is Dial's intensely gripping and deeply moving account of his two-year quest to unravel the mystery of his son's fate.

Scientist and explorer Roman Dial writes the memoir of his son's disappearance in Costa Rica's Corcovado National Park. Dial searches for answers while experiencing a profound sense of loss.

In the predawn hours of July 10, 2014, the son of Alaskan scientist and National Geographic Explorer Roman Dial walked alone into Corcovado National Park, an untracked rainforest along Costa Rica's remote Pacific Coast. He carried a light backpack and machete. Cody emailed his father that he would do 4 days in the jungle and a day to walk out. He was never seen again. The authorities suspected murder. Dial was forced to confront the question: Was he responsible for his son's fate? -- adapted from jacket