In a gritty noir-tinged New York, Jamie Madrox discovers that every physical impact creates a duplicate of himself, each with its own mind, desires, and secrets. As his “dupes” scatter across the city, some build lives, others spiral into crime, and a few begin manipulating events from the shadows. Struggling to retain his identity, Madrox becomes a detective to track down his own fractured existence. But when one of his duplicates orchestrates a conspiracy that threatens the entire city, Jamie must confront the terrifying truth: he may no longer be the original.
