La stagione 2 di Zero Hour è stata trasmessa su History da mercredi 12 octobre 2005 a mardi 21 février 2006. È composta da 6 episodi, il primo dei quali si chiama "The Bali Bombing" e l'ultimo "The Plot to Kill the Pope"..
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.