Zero Hour: Crisis in Time

Published in 1994 by DC Comics, 'Zero Hour: Crisis in Time' was a five-issue crossover event written by Dan Jurgens with art by Jurgens and Jerry Ordway. The storyline served as a sequel to the landmark 'Crisis on Infinite Earths' and aimed to address continuity issues within the DC Universe. The plot centers around the villain Extant, who attempts to unravel the timeline, causing chaos across the multiverse. Key characters include Hal Jordan as Parallax, who plays a pivotal role in the resolution of the crisis, as well as heroes like Superman, Batman, and the Justice Society of America. The event resulted in significant changes to the DC Universe, including the temporary erasure of the Justice Society and the introduction of a new timeline. It involved multiple tie-in issues across various DC titles, making it a comprehensive crossover. The series was notable for its attempt to streamline DC continuity and received mixed critical reception for its ambitious scope and execution.