Relive the gripping, noir-esque launch of Peter David's most memorable concept: X-Factor Investigations! Jamie Madrox sets up a detective agency in the heart of Mutant Town.but with so many duplicates out in the world, who is the real Madrox? Does he even know anymore? Then, when the fallout from the House of M depowers most of the world's mutants, X-Factor must find answers fast! Collecting: Madrox 1-5, X-Factor (2006) 1-12.