X-Men Milestones: 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.