DC's Legends of Tomorrow - Season 4 Episode 12 -

With darkness on the rise in 2019, the team realizes that a new host of problems have risen as they have been cleaning up history. Sara tries to save Ava from a fate worse than death while battling her own demons. Nora and Constantine, work together to take down a powerful demon. Meanwhile, Zari gets unsolicited advice from Mona, Charlie and even Rory.