How 'Buffy The Vampire Slayer' Inspired the 'Flash/Supergirl' Musical Crossover

melissa benoist grant gustin flash supergirl musical 07

About Photo #1076174: This week on Supergirl and The Flash, we get another crossover...and not just any kind of crossover, a musical one that reunites Grant Gustin, Melissa Benoist and… Read The Post Here

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