Jonah Hex Joins the Legends, Flash in Crisis on Infinite Earths BTS Photo

Filming is currently underway on the upcoming Arrowverse crossover "Crisis On Infinite Earths." Already, we've seen behind-the-scenes photos of Erica Durance's Lois Lane on Batwoman, Tyler Hoechlin and Tom Welling's respective Clark Kents in Smallville and a Superman team-up with Hoechlin and Brandon Routh's Last Sons of Krypton.

Now, we have yet another behind-the-scenes photo that once again teases the massive scope of the crossover.

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The set photo from the "Crisis On Infinite Earths" shoot reveals that Barry Allen, Jonah Hex and Mia Smoak will share the screen with Legends of Tomorrow's Sara Lance and John Constantine. Given that Hex and Mia both hail from the past and the future, respectively, it's clear that time travel will help bring all of these characters together.

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"Crisis on Infinite Earths" begins Sunday, Dec. 8 at 8 p.m. ET/PT on Supergirl, then continues in Batwoman on Monday, Dec. 9 at 8 p.m. ET/PT and in The Flash on Tuesday, Dec. 10 at 8 p.m. ET/PT. After the winter hiatus, the crossover will conclude on Tuesday, Jan. 14 in Arrow at 8 p.m. ET/PT and in DC's Legends of Tomorrow at 9 p.m. ET/PT.

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