"Dave Fearless and the Cave of Mystery; or, Adrift on the Pacific" by Roy Rockwood is a young adult adventure novel written in the early 20th century. The story follows Dave Fearless and his father, Amos, two skilled divers as they navigate a series of thrilling escapades in pursuit of a hidden treasure in the Pacific. Set against the backdrop of their quest, the tale is filled with high-seas adventure, deception, and battles against foes as they strive to reclaim the fortune that has slipped from their grasp. At the start of the narrative, we find Dave and his father on the deck of their ship, the "Swallow", having just discovered that their precious treasure has been stolen and replaced with worthless scrap. This shocking revelation sends them on a frantic mission to recover what is rightfully theirs, as they deal with treacherous rivals and unexpected challenges. The opening chapter sets the stage for an exhilarating quest filled with danger, camaraderie, and resourcefulness, as Dave plots to outsmart their enemies and ensure their treasure is ultimately reclaimed. (This is an automatically generated summary.)