The Peshawar Lancers, written by S.M. Stirling, is an alternative history mystery set in a world where a catastrophic event known as the 'Fall' has shifted the Earth's axis, causing a new ice age. The British Empire relocates to India, and the story follows the adventures of a British officer, Athelstane King, as he investigates a conspiracy that threatens the stability of the Empire. Stirling's vivid world-building and thrilling plot make The Peshawar Lancers an exciting alternative history mystery.