Supergirl: “The Martian Chronicles”
A ray of hope shines for fans, as this fairly well-done episodes pits Supergirl and her Martian associates against a bounty hunter from the red planet.

Legends of Tomorrow: “Turncoat”
The Legends travel to 1776 when they realize something’s wrong with Washington.

Arrow: “Bratva”
Team Arrow heads to Russia; Lance returns from rehab.