Find out the true nature of this dark, terrible secret. Collecting Mighty Avengers #21-36, and material from Secret Invasion: Requiem.

    But in doing so, Tony Stark has lost just about everything: his armor, his power - even his very mind. Now, at his absolute lowest point, it will take Tony's last reservoir of will - and a band of brothers including Thor, Captain America, War Machine and Black Widow - to keep from losing it all and sow the seeds for a brighter tomorrow. Stark Industries' arms-manufacturing days are over: Tony's new company, Stark Resilient, is bringing modern tech to the masses without bringing innocent people to their knees. But there's a competitor on the scene, a mother/daughter team with a very familiar name ready to pick up the slack with an armor called Detroit Steel. They've started a deadly game of international intrigue that will bring one of Iron Man's deadliest foes back into the fray - but for the Hammer girls, that was merely the opening salvo. With War Machine grounded by the Pentagon, Pepper missing the RT-charged heart that made her Rescue and Tony's Resilient team struggling to put their clean-energy tech into production, they're about to up the ante. Now, Iron Man's going to find out just what "resilient" really means.Collecting: The Invincible Iron Man 20-33

    Captain Universe and Manifold take a trip across the universe...but whatever happened to Ex Nihilo, Abyss, Starbrand and Nightmask? As the Avengers recruit more members to deal with the mounting threat, the Builders enter the universe - and cosmic war begins. Deep in space, the Avengers join the intergalactic fight, but the Builders have already decimated the forces of the mighty Skrull Empire - so what chance do Earth's Mightiest Heroes stand?Collecting: Avengers 14-23

    In Hyperion, Mark Milton suddenly finds himself both alone and hunted now that the world knows his dark secret.Collecting: Supreme Power 13-18, Supreme Power: Hyperion 1-5

    In House of M: The Day After, the X-Men struggle to pick up the pieces in a world that's changed forever. Collects: Mutopia X #1-5, New X-Men #16-19, Exiles #69-71, House of M: The Day After, and Giant-Size Ms. Marvel #1.

    Meanwhile, all is not right within S.H.I.E.L.D. - what does it have to do with a certain Red-Skulled villain who's been lurking in the background?Collecting: Thor 80-85, Iron Man 84-89, Captain America & The Falcon 5-7, Captain America 29-32

    They want to duplicate the accident that gave them their strange powers to reverse the process and become regular people again. Will these attempts to play with the strange science cause more harm than good?

    But who are the Secret Avengers? Spy intrigue meets super-hero action as the Super-Soldier, Black Widow, War Machine, Ant-Man, Valkyrie, Moon Knight and more take on a case that crosses dimensions and lands on Martian soil - and somehow involves Nick Fury! Then, the Celestial Order of the Hai-Dai launches a brazen attack on Shang-Chi. Its mission? To return him to his father, a man of consummate evil who has perpetuated his brand of wickedness and corruption for more than 3,000 years! Can Steve's stealth team - and an old friend from his World War II days - save the Master of Kung Fu? Ed Brubaker's blockbuster Secret Avengers run is collected in full! COLLECTING: SECRET AVENGERS (2010) 1-12

    The time-displaced young X-Men continue to adjust to a present day that's more awe-inspiring and disturbing than they could ever imagine! But as Jean Grey pushes her powers to the limit and Mastermind targets the young Jean, will a tragic history repeat itself? And as one of their number departs to join the adult Cyclops' crew of revolutionaries, the teens encounter the Uncanny Avengers...and young Cyclops meets the adult version of his brother Havok! Then, in the fallout from the Battle of the Atom, Kitty Pryde and the All-New X-Men's faith in Wolverine's Jean Grey School has been completely eroded - so where have they gone instead, and what will they do?Collecting: All -New X-Men 11-15, 18-21, & material from A+X 18, X-Men: Battle of the Atom 2, X-Men : Gold 1

    Then, it's off to small-town Centerville to face Salem's Seven and the Sons of the Serpent.

    The team behind the acclaimed Union Jack, Christos (World War Hulk: X-Men) Gage and Mike (Captain America) Perkins, reunite to bring you Marvel's heroes and villains in a world where anything can happen - and does! Return to the world of the hit House of M series, where mutants rule the earth and familiar heroes lead shocking, unfamiliar lives! See the history of this alternate reality revealed for the first time! Follow Luke Cage as he goes from wrongly-convicted prisoner to super-powered fugitive - and assembles the band of rebel freedom fighters who will come to be known as the Avengers! Featuring Hawkeye, Iron Fist, Moon Knight, Tigra, Mockingbird, and more than a few surprises!Collects: House of M: Avengers #1-5.

    Is this a terrorist attack on American soil? That's what the Avengers seek to discover as they brave the Red Zone's lethal perimeter - but the truth they uncover is even more startling! Then: her transformations into She-Hulk out of control, longtime Avenger Jennifer Walters seeks out the one person on Earth who can help: her cousin, the incredible Hulk. But can even the Avengers intervene when two gamma-powered goliaths clash? COLLECTING: Avengers (1998) 64-76

    Wolverine is on the run, Iron Man has sold his soul to the man, the Hulk is a hero of the people, Cable is M.I.A., Captain America can only bear witness and Hawkeye lives! Join them as they attempt to navigate their way through a world where mutants rule, and Homo sapiens are considered second-class citizens - a world ruled with an iron fist by the master of magnetism himself, Magneto!Collects: Wolverine #33-35, Iron Man: House of M #1-3, Incredible Hulk #83-87, Captain America #10, The Pulse #10, Cable & Deadpool #17 and material from Hulk: Broken Worlds #1.

    Marvel and Miles "Spider-Man" Morales! But who is the familiar villain pulling the reassembled Avengers' strings? And can the new lineup last long enough to be more than a footnote in the team's great history? Maybe not, when the events of Standoff make them forget their true identities! Then, feel the sting of the all-different Wasp! Will she be friend or foe?Collecting: All-New, All-Different Avengers #1-15 and Annual #1; materials from Avengers #0, Free Comic Book Day 2015 (Avengers) #1, and Free Comic Book Day 2016 (Civil War II) #1

    This title collects Fantastic Four number 2, New Avengers: Illuminati number 1 and number 5, and New Avengers number 31-32 and 38-39.