- Script:
- Chris Claremont
- Pencils:
- Marc Silvestri
- Inks:
- Hilary Barta
- Colors:
- Glynis Oliver
- Letters:
- Joe Rosen
- Genre:
- superhero
- Characters:
- FEATURE: X-Men [Storm; Wolverine; Colossus; Rogue; Psylocke; Dazzler; Longshot; Havok]; GUEST: Nathan Christopher Summers; John Grey; Elaine Gray; X-Factor [Cyclops; Jean Grey; Iceman; Beast; Archangel]; VILLAINS: Mr. Sinister; Goblin Queen [Madelyne Pryor] (dead); Marauders [Sabretooth; Blockbuster; Polaris [Malice]]; CAMEOS: Professor X; Juggernaut
- Synopsis:
- The X-Men battle Mr. Sinister on the psychic plane; Maddie's mind merges with Jean Grey's and fights for dominance; The X-Men hunt Sinister and the Marauders to his base of operations, Xavier's School for Gifted Youngsters; The X-Men attempt to separate Malice and Polaris but Sinister teleports them out and knocks them unconscious with only Longshot standing in the way of his victory.
- Reprints: show reprint note before migration
Cont. from X-Factor #38; Concluded in X-Factor #39