Under secret orders to assassinate the Widow, Hawkeye, the rough-edged marksman, finds himself caught up in a violent prison break that releases some of the world's most vicious and powerful criminals. Defying his superiors, Hawkeye joins forces with the sultry Russian spy and a mismatched group of personalities that include Spider-Man, Spider-Woman, Luke Cage, Captain America, and Iron Man.

Hey, hey, book lovers, take off those big thick glasses - this is Deadpool speaking! Sorry Marvel, somethin' happened to your copy guy. Anyway, this is my first prose novel, and they got this dude Stefan Petrucha to write it. He's good people. He's written novels and comics. But here's the thing: This book is about dogs. Dogs that turn into big nasty monsters. And then I gotta kill 'em. Thing is, I like killing people - the ones that deserve it, anyway - but I won't kill dogs. So that's what we call a character dilemma.

Iron Man and Captain America are two core members of the Avengers, the world's greatest superhero team. But when a tragic battle blows a hole in the city of Stamford, killing hundreds of people, the US government demands that all superheroes unmask and register their powers. To Tony Stark - Iron Man - it's a regrettable but necessary step. To Captain America, it's an unbearable assault on civil liberties.

The fate of the entire Marvel Universe hangs in the balance as Earth's mightiest heroes face their greatest challenge! Summoned across the stars by the mysterious and unbelievably powerful Beyonder, the Avengers, Spider-Man, the Fantastic Four, and the X-Men are set against their deadliest foes on the mysterious planet known as Battleworld - with the winner promised the ultimate prize. But as battle lines are drawn, new alliances are forged, and old enemies clash, one among them is not willing to settle for anything less than godhood.

In a dark and dangerous future, the mutant-hunting machines known as the Sentinels rule America with an iron fist. Almost all mutants and superhumans have been exterminated. Only a handful of imprisoned mutants remain to fight against their oppressive robotic overseers! Now Kate Pryde, former X-Man, must travel back in time and warn her present-day teammates of the coming danger - and hopefully prevent this horrible future from ever taking place!