The New Mutants
N'astirh attempts to make a deal with Magneto and the Hellfire Club as Magik battles S'ym, then teleports the team to Limbo's past to rescue her six-year-old self. She nearly kills young Illyana before Wolfsbane talks her down, then sends the demons back to Limbo, reverting herself to a six-year-old child.
Collects X-Factor #37-40, The Uncanny X-Men #241-243, Excalibur #6-7, The New Mutants #73, X-Factor Annual #4. The Inferno crossover conclusion — demons invade New York across all X-books.
Collects X-Terminators #1-4 and The New Mutants #71-85. Inferno aftermath - the New Mutants rebuild, plus the X-Terminators mini.
Collects X-Terminators #1-4 and material from 3 other series. The Inferno crossover - Madelyne Pryor becomes the Goblin Queen, demons invade.
Collects X-Factor #33-40, Uncanny X-Men #239-243, New Mutants #71-73, and Excalibur #6-7. The Inferno crossover -- Madelyne Pryor becomes the Goblin Queen as demons invade New York.
Collects X-Factor #33-40, Uncanny X-Men #239-243, New Mutants #71-73, X-Terminators #1-4, and more. The full Inferno crossover -- demons overtake Manhattan.
Collects The Uncanny X-Men #239-243; X-Factor #36-39; The New Mutants #71-73.
Collects New Mutants #55-73, Annuals, X-Terminators #1-4, and Uncanny X-Men tie-ins. The road to Inferno and the crossover itself -- the teams darkest hour under Louise Simonson.