The Uncanny X-Men
The Marauders begin their assault on the Morlocks as Malice possesses Dazzler. Nightcrawler is beaten by a mob while Magneto is offered a seat in the Hellfire Club's Inner Circle.
Collects X-Factor #9-17 and material from 12 other series. The complete Mutant Massacre - Marauders slaughter the Morlocks as the X-teams respond.
Collects Uncanny X-Men #210-213, X-Factor #9-11, New Mutants #46, Thor #373-374, Power Pack #27
Collects X-Factor #9-11; The Uncanny X-Men #210-214; The New Mutants #46; X-Men: Mutant Massacre.
Collects X-Factor #9-11, The Uncanny X-Men #210-214, The New Mutants #46, Sabretooth Classic #6-11, X-Men Mutant Massacre, X-Men: Mutant Massacre. The 1986 crossover where the Marauders slaughter the Morlocks in the tunnels beneath New York.
Collects Uncanny X-Men #199-210 and New Mutants Special. Claremont's run through the Mutant Massacre — one of the X-Men's darkest chapters.