The Peshawar Lancers, written by S. M. Stirling, is an exciting alternative history mystery book set in a world where a catastrophic event has shifted the Earth's climate. The story takes place in a British Empire that has relocated to India, and follows the adventures of a young woman named Athelstane King. When her father, a senior officer in the Empire's secret service, goes missing, Athelstane embarks on a journey to uncover the truth behind his disappearance. Stirling's vivid world-building and fast-paced plot make The Peshawar Lancers a thrilling read for fans of alternative history and mystery genres.