Ryn discovers a refuge of injured mermaids that escaped Tia’s violent takeover. Ben and Xander get caught in a battle with Tia’s troops. Maddie feeds Robb half-truths to secure his…

Ben faces a choice that has rippling consequences amongst mermaid, hybrid and human alike, as the truth about mermaids is exposed.

With Ortega’s fate hanging in the balance, Kovacs drops a bombshell on the Bancrofts. Later, he comes face to face with an unsettling opponent.

The team races to stop Flynn before the bloody Battle of the Alamo ensues, but will it be victory or death for our time-traveling trio?

Kara investigates a secretive new group whose leader, Thomas Coville, has a mysterious connection to Supergirl. Meanwhile, Samantha feels like she’s letting Ruby down, and J’onn confesses an old secret.

In an effort to unravel a dark conspiracy within the Noah Objective, the team travels to Vancouver, where it must infiltrate a black-tie event in order to get close to…