Born the runt of his litter and gambled away to a rusty old riverman, the Newfoundland pup Seaman doesn't imagine his life will be marked by any kind of glory - beyond chasing down rats. But when he meets Captain Lewis, Seaman, a 150-pound Newfoundland dog, finds himself on a path that will make history. Lewis is just setting off on his landmark search for the Northwest Passage, and he takes Seaman along. Sharing the curiosity and strength of spirit of his new master, Seaman proves himself a valuable companion at every turn.

It is 1804 - a historic year in America - the year that Meriwether Lewis, William Clark, and the Corps of Discovery set out for their now-legendary exploration, departing St. Louis to travel across the country to the Pacific Ocean and back. Part history, part science - and adventure through and through - The Captain's Dog is the carefully researched, thrilling tale of America's greatest journey of discovery, as seen through the keen, compassionate eyes of a remarkable dog.