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.