Supergirl finally learns the truth about Lena while tangling with Leviathan. J’onn J’onn makes a discovery about his brother’s whereabouts.

Myr’nn inadvertently causes psychic disturbances at the DEO; Supergirl must work with J’onn to contain the chaos; Mon-El begins training Kara in fighting techniques he’s learned in the future.

Between Ben Lockwood’s new push to stir up the anti-alien movement and the Elite’s desire to target Lockwood and his minions, Supergirl is concerned about the safety of the American…

After Cicada’s attack on The Flash, the team realizes they need to think outside the box to stop this dangerous new foe. Desperate to help her parents, Nora comes up…

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The pressure mounts for Oliver who begins to wonder if he will lose everything in his battle to save Star City. A familiar face returns.