Greg Keyes is the author of numerous science fiction and fantasy novels, including the Kingdoms of Thorn and Bone series, the Star Wars: The New Jedi Order series, and the Age of Unreason quartet.
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Captain America, Iron Man, Thor, Black Widow, and the Hulk— Earth's Mightiest Heroes—have assembled to face world-class threats whenever and wherever they might appear. They are the Avengers. Yet some threats transcend the ages. Centuries ago, a never... SEE MORE