The destruction of Earth-2, which took place in the season premiere of The CW's Arrow, won't be discovered by the heroes of Central City just yet. In fact, Team Flash won't find out of the parallel world's destruction until the start of "Crisis on Infinite Earths" in December.
"The fate of that Earth, all of those questions are answered when the crossover starts," Cisco Ramon actor Carlos Valdes told TVLine. "That really is when the s–t stars to hit the fan, so to speak. Everything up until then is more just a Crisis ramp-up."
Both Arrow and The Flash have focused heavily on the buildup to the Arrowverse mega-crossover, which will span across all five shows in The CW's shared superhero universe in what's easily its most ambitious event to date. Multiple guest stars will be along for the ride, including many from past DC television shows, and showrunner Marc Guggenheim has also stated there are still plenty of surprises left in store.
"Crisis on Infinite Earths" begins Sunday, Dec. 8 at 8 p.m. ET/PT on Supergirl, then continues in Batwoman on Monday, Dec. 9 at 8 p.m. ET/PT and in The Flash on Tuesday, Dec. 10 at 8 p.m. ET/PT. After the winter hiatus, the crossover will conclude on Tuesday, Jan. 14 in Arrow at 8 p.m. ET/PT and in DC's Legends of Tomorrow at 9 p.m. ET/PT.