"Contains material originally published in magazine form as Uncanny X-Men #210-214, X-Factor #9-11, New mutants #46, Thor #373-374, Power pack #27 and Daredevil #238."--T.p. verso.

"The Morlocks: a community of mutant outcasts living beneath the streets of Manhattan. The Marauders: professional mutant assassins, employed by a mysterious evil to wipe the Morlocks out. In between the two stand some of Marvel's most heroic: X-Men, X-Factor, the New Mutants, Power Pack, Daredevil and the mighty Thor! But taken by surprise by the Marauders' overwhelming onslaught, can these disparate heroes hope to save any of the Morlocks?"--P. [4] of cover.