This year's Arrowverse crossover, "Elseworlds," is three weeks away and the latest promo from The CW shows Batwoman in action as Barry Allen and Cisco Ramon venture in Gotham City.

As the Central City duo explore the iconic DC Comics city, Cisco dismisses rumors of Batman as an urban legend. As the two debate over the existence of Batman, a breakout is seen in Arkham Asylum as Batwoman is called in by the Bat Signal before facing Barry and Cisco.

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"That's...not Batman," comments Barry while still swapped in the superheroic persona of Green Arrow.

"No, it is not," Cisco agrees as the Gotham City hero glances up at them.

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Coupled with earlier reports that the Arrowverse version of Batman has been missing for three years and written off as a hoax to deter crime, it appears Barry and the DCTV heroes are about to find out first-hand who has been defending Gotham in his absence.

This year's Arrowverse crossover event will involve the casts of Supergirl, Arrow, and The Flash. The event will unfold over three nights, starting with a special episode of The Flash on Sunday December 9 at 8 p.m. ET/PT. Then, it continues Monday, December 10, with Arrow and concludes on Tuesday, December 11, with Supergirl.