Last night, The CW aired the Legends of Tomorrow Season 2 premiere, where the Waverider crew went back to 1942 to save Albert Einstein from being kidnapped. After that episode aired, The CW released a new trailer for the second Season 2 episode, The Justice Society of America, which airs Thursday, October 20 at 8 PM ET on The CW. This new footage reveals the Legends have reunited with Hourman (Patrick Adams), who introduces them to the Justice Society of America. We also have another trailer that shows what's ahead for the entire season of this hit series.

The Legends travel to Nazi-occupied Paris, but find themselves surrounded by the Justice Society of America (AKA JSA). The Legends discover a time aberration that threatens the JSA, but the JSA wants nothing to do with them or their help. Nevertheless, the Legends force their way into the JSA's mission to intercept and seize a mysterious package.

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Nate (Nick Zano) is desperate to prove that he should be part of the team, but he has a secret that he shares with his grandfather Commander Steel (Matthew MacCaull) that might make it difficult. Ray (Brandon Routh) is so focused on impressing the JSA, he puts himself and Vixen (Maisie Richardson-Sellers) in danger. Meanwhile, Stein (Victor Garber) has stepped in as the leader with Rip gone, but when decisions aren't being made Sara (Caity Lotz) seems to be the one calling the shots.

Other members of The CW Network's version of the Justice Society of America include Sarah Grey as Stargirl, Kwesi Ameyaw as Dr. Mid-Nite, Patrick J. Adams as Hourman, Dan Payne as Obsidian, with the character's voice provided by Lance Hneriksen, Maisie Richardson-Sellers as Vixen and Matthew MacCaull as Commander Steel. It remains to be seen if any of these Justice Society of America characters will be coming back to present day for the highly-anticipated four-part crossover between Legends of Tomorrow, Arrow, The Flash and Supergirl. It has already been confirmed that these heroes will be squaring off against a group of villains from the DC Comics known as The Dominators.

It has also been confirmed that Legends of Tomorrow Season 2 will showcase the Legion of Doom, with villains such as Malcolm Merlyn (John Barrowman), Damien Darhk (Neal McDonough), the Reverse-Flash (Matt Letscher) and Captain Cold (Wentworth Miller). Matt Letscher, who played the Reverse-Flash/Eobard Thawne on The Flash, joins Legends of Tomorrow as a series regular. Deals with Wentworth Miller and John Barrowman were announced this summer, allowing their characters to appear across multiple shows, and Neal McDonough's Damien Darhk character will now have a recurring role on Legends of Tomorrow. Take a look at the new trailer for Legends of Tomorrow that offers a closer look at the Justice Society of America.