Now, Kara and Barry are set to team up once again in the Supergirl and The Flash musical crossover that will kick off in the former’s March 20th episode, ‘Star-Crossed’, and take place mainly in the latter’s March 21st episode, ‘Duet’.
Now, the stars and producers of The Flash and Supergirl discuss the episode and the potential of a followup.
That ended up happening in Supergirl season 1 when Barry Allen (Grant Gustin) traveled to National City by way of the multiverse – The Flash takes place on Earth-1 while Supergirl lives on Earth-38.
When the solo show following Kara Danvers (Melissa Benoist) was first being developed, fans wondered whether it would crossover with any of The CW’s series.