Continuing Marvel's star-studded celebration of the Fantastic Four's 40th Anniversary! Who is the evil genius behind the recent attacks on the FF? If Namor and the Kree Sentry weren't enough, now our fab foursome must contend with the X-Men, Spider-Man, Dr. Strange and the mutant-hunting Sentinels! Erik Larsen, Keith Giffen, Ron Frenz, Tom DeFalco, Joe Sinnott and more deliver Mighty Marvel Action in the classic Lee/Kirby tradition!