In Search of the Castaways, originally published in 1868, is a novel by Jules Verne that follows the adventures of a group of people who set out to rescue the survivors of a shipwreck. The story is inspired by the true tale of the shipwreck of the Saint-Michel, which was lost in the Pacific Ocean.

The story begins with the shipwreck of the Duncan, a vessel carrying a group of castaways after a disaster in the Pacific Ocean. Among the survivors are Captain John Mangles, a brave and resourceful leader; his friend, the French engineer Jacques Paganel; and the young heroine, the beautiful and intelligent Miss Mary Grant, who is the daughter of a Scottish nobleman.

Mary Grant learns about her father's fate and becomes determined to rescue him and the other castaways. She and the crew of the Duncan decide to set out on a daring expedition to locate the missing men. They face many challenges, including treacherous seas, hostile islanders, and the constant threat of wild animals.

The expedition leads them to various islands in the South Pacific, where they encounter both natural wonders and dangers. During their journey, they uncover clues about the fate of the castaways, leading them deeper into the wilderness. The narrative highlights the beauty and peril of the islands, with Verne providing vivid descriptions of the landscapes and inhabitants.

As the characters overcome obstacles, they gradually discover the truth about the castaways' fate and their whereabouts. Their determination, resourcefulness, and teamwork ultimately pay off, culminating in a dramatic and satisfying resolution.....