Originally published in comics as X-Men #239-243, New Mutants #71-73, X-Factor #36-39.

The match is struck as the enigmatic geneticist Mr Sinister and the demon-lord N'astirh set their respective master plans in motion - both centered around one woman: Madelyne Pryor, wife of Scott Summers, the X-Man called Cyclops. The flame is fanned as Sinister's agents, the Marauders, attack Madelyne's protectors in the X-Men.