Either way, Kara and Barry end up trapped, and the hypnotic Music Meister has them under his evil spell.
Though they might be outside the alternate reality, in Central City, they will still face off against the Music Meister and hold him to account.
Supergirl continues with ‘Star-Crossed’ on Monday, March 20 at 8 p.m. EST, followed by The Flash on Tuesday, March 21 in the same time slot with ‘Duet’.
It’s a tricky mash-up; two superhero TV shows coming together in an alternate reality where there’s singing, dancing, glitzy costumes, and original songs to boot.