Sullivan's work is deeply informed by his profound engagement with language and his immersive experiences in the wilderness. He masterfully blends his travels and solitary explorations with a keen literary sensibility, delving into themes of nature, endurance, and the human connection to the wild. His writing is characterized by meticulous observation and a lyrical prose that transports readers to the heart of his adventures. Sullivan's unique voice emerges from this fusion of intellectual curiosity and a deep, abiding respect for the natural world.
Portland police detective Neil Ferguson uncovers a series of puzzling and threatening clues that lead to the identity of D.B. Cooper, the mysterious man who hijacked a plane and parachuted with $200,000 in 1971. But when Ferguson delves deeper into a web of blackmail and murder, he realizes there may in fact be two D.B. Coopers.