In the predawn hours of July 10, 2014, the twenty-seven-year-old son of preeminent Alaskan scientist and National Geographic Explorer Roman Dial, walked alone into Corcovado National Park, an untracked rainforest along Costa Rica’s remote Pacific Coast. Before he left, Cody Roman Dial emailed his father: “I am not sure how long it will take me, but I’m planning on doing four days in the jungle and a day to walk out. I’ll be bounded by a trail to the west and the coast everywhere else, so it should be difficult to get lost forever." They were the last words Dial received from his son. As soon as he realized Cody Roman’s return date had passed, Dial set off for Costa Rica. As he trekked through the dense jungle, the desperate father was forced to confront the deepest questions about himself and his own role in the events. Was he responsible for his son’s fate? Or, as he hoped, was Cody Roman safe and using his wilderness skills on a solo adventure from which he would emerge at any moment?