Dig Deep - Marcus Webb - Bog

Case, a mountain biker, loses his wife and sets out on a journey through the United States, England, and Europe. An accident occurs on the trails of Poland's Owl Mountains, and his only savior is a young Polish girl named Anja. They become trapped in a hidden shaft, revealing Hitler's secret World War II weapons. Case's cycling motto, "to dig deep," takes on new meaning as they flee for their lives.