Comic Script by: Gail SimoneIllustrated by: David MarquezCover Design or Artwork by: Ario AninditoA forgotten vow from one of the team comes back to haunt them all in the most SHOCKING way imaginable, as ghastly guest stars from Marvel\’s past threaten to take one of our most beloved mutants into their number forever! Can the Uncanny X-Men stop their friend from being taken to WHERE MONSTERS DWELL?