Supergirl: 2x4
Survivors
When Kara and Alex investigate the murder of an unregistered alien, the trail leads to an alien fight club run by Roulette, the ringmaster who commands aliens to fight in mortal combat for the entertainment of rich humans. While trying to stop the fighting, Supergirl and Martian Manhunter find themselves up against a surprising opponent. Meanwhile, Hank is thrilled to have found another Martian and tries to get to know M’Gann better. Supergirl takes Mon-El under her wing and begins to train him.
2 - 1The Adventures of Supergirl Oct. 10, 2016
2 - 2The Last Children of Krypton Oct. 17, 2016
2 - 3Welcome to Earth Oct. 24, 2016
2 - 4Survivors Oct. 31, 2016
2 - 5Crossfire Nov. 07, 2016
2 - 6Changing Nov. 14, 2016
2 - 7The Darkest Place Nov. 21, 2016
2 - 8Medusa (I) Nov. 28, 2016
2 - 9Supergirl Lives Jan. 23, 2017
2 - 10We Can Be Heroes Jan. 30, 2017
2 - 11The Martian Chronicles Feb. 06, 2017
2 - 12Luthors Feb. 13, 2017
2 - 13Mr. & Mrs. Mxyzptlk Feb. 20, 2017
2 - 14Homecoming Feb. 27, 2017
2 - 15Exodus Mar. 06, 2017
2 - 16Star-Crossed (I) Mar. 20, 2017
2 - 17Distant Sun Mar. 27, 2017
2 - 18Ace Reporter Apr. 24, 2017
2 - 19Alex May. 01, 2017
2 - 20City of Lost Children May. 08, 2017
2 - 21Resist May. 15, 2017
2 - 22Nevertheless, She Persisted May. 22, 2017