"The best superhero saga ever "--Pulp Fiction ReviewsThe Sentinels and their oldest enemies must band together as four Great Rivals--cosmic beings of unimaginable power, to whom humans are but insects--renew their ancient war high above the Earth. But even as our heroes and their foes all rush into space in a hopeless effort to drive away these malevolent menaces, new clues to the origins of Ultraa and Vanadium emerge--revelations that will rock the...