Supergirl S01E18 Worlds Finest
Canadagraphs eclusive! October 11, 2017 - Supergirl stars Melissa Benoist and Chyler Leigh shoot a rehearsal for episode 308 "Crisis On Earth X" with Legends Of Tomorrow star Caity Lotz in Vancouver. Melissa might have gone a bit off script at one point. This is part of the 4 episode cross over with Arrow, The Flash and Legends Of Tomorrow for the 2017 Arrowverse cross over event.