- 4 - 22The Quest for PeaceMay. 19, 2019
- 4 - 21Red DawnMay. 12, 2019
- 4 - 20Will The Real Miss Tessmacher Please Stand Up?May. 05, 2019
- 4 - 19American DreamerApr. 28, 2019
- 4 - 18Crime and PunishmentApr. 21, 2019
- 4 - 17All About EveMar. 31, 2019
- 4 - 16The House of LMar. 24, 2019
- 4 - 15O Brother, Where Art Thou?Mar. 17, 2019
- 4 - 14Stand and DeliverMar. 10, 2019
- 4 - 13
- 4 - 12MenagerieFeb. 17, 2019
- 4 - 11Blood MemoryJan. 27, 2019
- 4 - 10Suspicious MindsJan. 20, 2019
- 4 - 9Elseworlds (III)Dec. 11, 2018
- 4 - 8Bunker HillDec. 02, 2018
- 4 - 7Rather the Fallen AngelNov. 25, 2018
- 4 - 6Call to ActionNov. 18, 2018
- 4 - 5Parasite LostNov. 11, 2018
- 4 - 4AhimsaNov. 04, 2018
- 4 - 3Man of SteelOct. 28, 2018
- 4 - 2FalloutOct. 21, 2018
- 4 - 1American AlienOct. 14, 2018
In season four, Supergirl is facing a bigger threat than she’s ever faced before – a new wave of anti-alien sentiment, spreading across National City that’s fomented by Agent Liberty. As Kara mentors a new reporter at CatCo, Nia Nal, and tries to use the power of the press to shine a light on the issues threatening to tear the city apart, Supergirl takes to the skies to battle the many villains who rise up in this era of divisiveness.