Deciding to become proactive, the X-Men attempt to infiltrate the Hellfire Club's inner sanctum. However, they soon discover that they may have played right into the hands of their mysterious foes when they run into the Inner Circle of the Hellfire Club.
Printed: Apr 1980
Writers: Chris Clairemont and John Byrne
Art: John Byrne and Terry Austin
Cover: John Byrne and Terry Austin
- The Dark Phoenix Saga Part 4
- 1st full team appearance of the Hellfire Club
- 1st full appearance of the Black Bishop, Harry Leland
- 1st full appearance of the White Bishop, Donald Pierce
- 1st appearance of Tessa, later becomes Sage
