New ‘Supergirl’/’Flash’ Crossover Trailer: Who’s the Fastest Person Alive?

While The Flash may be the fastest man alive, is he the fastest person alive?

CBS has unveiled another quick promo for the highly-anticipated Supergirl/Flash crossover dropping on March 28, that pits Supergirl vs. the fastest man alive in The Flash.

So, who is the fastest person alive?

On your marks…
Get set…
GO! ⚡️✊#SupergirlXTheFlash@MelissaBenoist @grantgusthttps://t.co/cOXCpmFEyn

— Supergirl (@supergirlcbs) March 17, 2016

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Guess we’ll have to wait until March 28 to learn the answer. Though something tells me we might not find out a definitive answer.

Supergirl airs Mondays at 8/7c on CBS and The Flash airs Tuesdays at 8/7c on The CW.