Collects Avengers (1963) #263, Fantastic Four (1961) #286, X-Factor (1986) #1-26 And Annual #1-2, Iron Man Annual #8, Amazing Spider-Man (1963) #282, Thor (1966) #373-374 And #377-378, Power Pack (1984) #27 And #35, Mephisto Vs. #2, Incredible Hulk (1968) #336-337, Secret Wars Ii #5, And Material From Marvel Fanfare (1982) #40 And Classic X-Men #8 And #43.

When Jean Grey returns from a watery grave, the original X-Men reunite - as X-Factor! But for Marvel Girl, Cyclops, Beast, Angel and Iceman, posing as a mutant-hunting organization gets complicated fast! And things get worse when the ageless villain Apocalypse makes the scene! Then, when X-Factor is drawn into the chaos of the Mutant Massacre, Angel suffers a grievous injury and will be changed forever! As X-Factor rescues young mutants - including Leech, Boom-Boom and Rictor - the Beast undergoes a radical metamorphosis, Iceman battles alongside Thor, tragedy pushes Cyclops to the brink of insanity and a traitor stalks the team from within! Will Apocalypse's Four Horsemen put the final nail in X-Factor's coffin?