They keep killing Jamie Madrox - Peter David

X-Factor has suffered its greatest casualty yet, Madrox, the man of many multiples who's led the team since its inception, is gone. It wasn't supposed to be this way, but only Layla Miller knows why. With their fearless leader dead and the Schism between Wolverine and Cyclops ripping the mutant world apart, X-Factor's future is uncertain. That's why Wolverine has paid the team a visit, offering a shocking new option for the world's only mutant detective agency. But is Madrox really dead? Collecting: X-Factor 229-232