In 1985, the shape of the DC Universe was irrevocably changed by the legendary 12-issue series "Crisis on Infinite Earths". Now, the epic that saw the heroic deaths of the 1960s Flash, Barry Allen and the original Supergirl, as well as the consolidation of DC's multiple Earths into a single, unified world, is collected at last in a trade paperback. This powerful tale features virtually every DC super-hero ever, plus countless villains, supporting characters, and much more.