Supergirl Season 3 Episode 17
Trinity
Still reeling after learning about Lena’s secret, Supergirl asks Guardian for a favor that could alter his relationship with Lena forever. Meanwhile, with all three Worldkillers united, Supergirl and the team brace for an epic battle.
3 - 23Battles Lost And WonJun. 18, 2018- 3 - 22Make It ReignJun. 11, 2018
- 3 - 21Not KansasJun. 04, 2018
- 3 - 20Dark Side of the MoonMay. 28, 2018
- 3 - 19The FanaticalMay. 21, 2018
- 3 - 18Shelter From the StormMay. 14, 2018
- 3 - 17TrinityMay. 07, 2018
- 3 - 16Of Two MindsApr. 30, 2018
- 3 - 15In Search of Lost TimeApr. 23, 2018
- 3 - 14Schott Through the HeartApr. 16, 2018
- 3 - 13Both Sides NowFeb. 05, 2018
- 3 - 12For GoodJan. 29, 2018
- 3 - 11Fort RozzJan. 22, 2018
- 3 - 10Legion of Super-HeroesJan. 15, 2018
- 3 - 9ReignDec. 04, 2017
- 3 - 8Crisis on Earth-X (I)Nov. 27, 2017
- 3 - 7Wake UpNov. 20, 2017
- 3 - 6MidvaleNov. 13, 2017
- 3 - 5DamageNov. 06, 2017
- 3 - 4The FaithfulOct. 30, 2017
- 3 - 3Far From the TreeOct. 23, 2017
- 3 - 2TriggersOct. 16, 2017
- 3 - 1Girl of SteelOct. 09, 2017
