Zero Hour: Crisis in Time #4

Zero Hour: Crisis in Time #4 was published by DC Comics in 1994 as the concluding chapter of a five-issue limited series designed to address continuity inconsistencies following the 1985 event Crisis on Infinite Earths. Written and illustrated by Dan Jurgens, the series utilized the villainous Hal Jordan, acting under the mantle of Parallax, to attempt a restructuring of the DC timeline. This final issue serves as the resolution to the temporal collapse, setting the stage for a streamlined editorial direction across the company's various titles.

The creative intent behind the series was to unify the disparate realities that had persisted in DC lore for nearly a decade. Jurgens employed a unique numbering format, counting down from issue four to zero, which highlighted the series' theme of impending temporal erasure. While the event is recognized for its ambition in managing decades of character history, its legacy is often noted for the controversial transformation of established heroes into antagonists and its role as a precursor to the modern era of frequent, large-scale continuity reboots.