First SUPERGIRL/FLASH Crossover Trailer

"Supergirl" poster
Credit: CBS

CBS has released the first trailer for the Flash's upcoming appearance in Supergirl. Melissa Benoist and Grant Gustin don't share the screen just yet, but the iconic Supergirl logo being surrounded by Flash's electricity is startling.

Take a look:

The "Worlds' Finest" episode of Supergirl is scheduled to air March 28 on CBS.

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