1969: The X-Men, Marvel's poorest selling title, flagging in sales and on the verge of cancellation, was in dire need of a shot in the arm. Enter Roy Thomas and Neal Adams, and True Believer, you had better grab onto your hat and get ready for one of the most amazing evolutions in Marvel history! Prepare yourself for the introduction of mutant mainstay Havok, the vampiric villain Sauron, the Mutates, and X-Man-to-be Sunfire! Not to mention, the Living Pharaoh, a classic team-up with Ka-Zar in the Savage Land, as well as the return of Magneto and Professor X! Plus: Hank P. McCoy tries a stint as mad scientist and ends up creating - and BEING - his own monster! And while the Beast gets furried and hurried, his former teammates are fighting the likes of Morbius and the Hulk! Guest-starring Spider-Man and Iron Man!
Collecting X-MEN #54-66, AMAZING ADVENTURES #11-17, MARVEL TEAM-UP #4, INCREDIBLE HULK #150 and #161.
— Description from Comic Vine community (comicvine.gamespot.com).
