Video: Two New Behind The Scenes & Sneak Peek for #SupergirlxTheFlash

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CBS has released two more videos with interviews and behind the scenes footage from tomorrow’s episode. Grant and Melissa are too adorable for words.

The second video shows a little more about how Siobhan becomes the Silver Banshee and teams up with Livewire.

USA Today also has an exclusive new sneek peek of Flash and Supergirl at the DEO.