"Wolverine takes on the savage Hulk - but whose side are Havok and X-Factor on? And what does the gamma-powered Leader have to do with it all? Meanwhile, Beast and Gambit face the evil machinations of Mister Sinister...with a little help from Spider-Man! Things take an occult turn for Cyclops, courtesy of the demonic N'Garai and the Dweller-in-Darkness! And when Magneto and his Brotherhood commit an act of war, the X-Men must respond - but as the...

The CLIMACTIC SHOWDOWN between the X-MEN and the new BROTHERHOOD OF EVIL MUTANTS! Who will be left standing after the world's mightiest mutants throw down? And when the dust settles, not everything is as it seems.

The future begins in the past! It's an 11th century clash of the titans as Thor battles Apocalypse! The Avengers' ancestors are being hunted, with Rama-Tut and Kang pulling the strings, and only a young Thor can save his future companions. And in the present, the beginning of the end looms as the Apocalypse Twins debut. Why are they targeting the Celestials? What is their connection to Kang? And how is Thor responsible for their mighty power? Apocalypse's...

In this second volume in the Ultimate Series, the X-Men are captured and forced into service for the government's nefarious Weapon X program. Will they be rescued by Wolverine, or will they be forced to commit terrible acts as government agents?

"Someone is weaponizing mutants! And they're being turned loose on the enemies of Homo superior. How with the Uncanny X-Men react? And what will Magneto's uneasy allies do when they discover that the Master of Magnetism hasn't been altogether forthcoming about the means he's been employing to protect his race? To find out exactly what he's been up to, the X-Men investigate-- and the trail starts at the all-new, all-different Hellfire Club! But to...