Arrow, The Flash, and Supergirl will be joined by Legends of Tomorrow and Batwoman. Yes! The event will span five hours. There is a slight twist to how long it will span. The first half of “Crisis on Infinite Earths” will start in December before taking a break. It will conclude following the midseason break, per TVLine.
Arrow-verse fans will recall that Legends of Tomorrow ended up not participating in last year’s installment entitled “Elseworlds.” This news ensures that there will not be a repeat of that for “Crisis on Infinite Earths.”
Unlike its fellow Arrow-verse series, Legends of Tomorrow will not be a part of The CW’s fall slate. It will debut during the midseason. Hence, its crossover episode airing in 2020. There will never be another crossover quite like this, so Legends of Tomorrow participating this time was especially essential.
It will be Arrow’s last. The show that started the entire universe will be ending with its eighth season. Its final season will be comprised of only 10 episodes. Arrow will return this fall on The CW.