"A Runaway Brig; Or, An Accidental Cruise" by James Otis is a work of juvenile fiction written in the late 19th century. The story follows a group of boys, primarily focusing on Harry Vandyne and Walter Morse, as they unintentionally set sail on a brigantine, the Bonita, during their summer vacation. They encounter mysteries and dangers on the sea, which leads to an adventurous and suspenseful narrative filled with the allure of exploration and youthful mischief. The opening of the book introduces us to Harry Vandyne and Walter Morse, who are eager to sail with Jim Libby, a sailor they have befriended during their stay at the Isle of Shoals. Walter struggles with his responsibilities at home, but Harry convinces him to set off for a sail on the Sally Walker, Jim's tender. Their adventure takes an unexpected turn when they find themselves aboard the abandoned Bonita, where they soon realize they are alone and may have become entangled in a more significant mystery involving potential pirates. Fears escalate as they explore the deserted ship, eventually leading them to the startling discovery of a starving sailor, adding a new layer to their plight, and setting the stage for their ongoing challenges at sea. (This is an automatically generated summary.)