In The Mysterious Island a group of men escape imprisonment during the American Civil War by stealing a balloon. Blown across the world, they are air-wrecked on a remote desert island. In a manner reminiscent of Robinson Crusoe, the men apply their scientific knowledge and technical skill to exploit the island's bountiful resources, eventually constructing a sophisticated society in miniature. The book is also an intriguing mystery story, for the island has a secret.