In the predawn hours of July 10, 2014, the son of legendary Alaskan explorer Roman Dial walked alone into the untracked rainforest of Costa Rica's remote Pacific Coast. "I'm planning on doing 4 days in the jungle," he wrote his father before leaving, "it should be difficult to get lost forever." Then he vanished... This is Roman Dial's account of his two-year quest to unravel the mystery of his son's disappearance in the remote jungles of Costa Rica. In part a detective story set in the most beautiful yet dangerous reaches of the planet, The adventurers son emerges as a far deeper tale of discovery -- a quest to understand the truth about those we love the most.