Character(s):
X-Men [Cyclops; Phoenix [Jean Grey; also as Dark Phoenix on last page]; Storm; Wolverine; Colossus; Nightcrawler]; Beast; Hellfire Club [Sebastian Shaw; Harry Leland; Donald Pierce; Mastermind]; Hellfire Soldiers; Senator Robert Kelly (cameo)
Synopsis:
Jean breaks Mastermind's spell over her and the X-Men battle the Hellfire Club through the Club's mansion. Jean drives Mastermind insane for toying with her mind. Jean snaps and becomes Dark Phoenix.