Murder and mayhem in the Reign of X! The Scarlet Witch has been murdered - and as X-Factor investigates the shocking crime, all clues point to Magneto! Meanwhile, the fallout from the Hellfire Gala continues for S.W.O.R.D. as Doctor Doom sticks around for a meeting of monarchs with matters of galactic import to discuss - including the Last Annihilation! The New Mutants are reeling from their own devastating loss as a great evil continues to cast its shadow. And when new problems present themselves in Ireland, the Marauders bring in Banshee for some assistance - and he'll soon be screaming into battle!