The BEST seasons of Zero Hour

Every season of Zero Hour ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of Zero Hour!

This dynamic original series dramatizes the final hour leading up to several pivotal historical events, tracking happenings as they unfold, minute by minute. Using a real-time clock and a split-screen to follow key players, the series reveals the chilling lead-up to events that changed the world including the Chernobyl nuclear meltdown, 9/11 and the Columbine shooting.