S3·E17 Trinity
Narrative Classification: Character-defining development exploring origin backstory and emotional depth.
Synopsis
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.
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Frequently Asked Questions
When did Season 3 Episode 17 of Supergirl air?
Season 3, Episode 17 ('Trinity') originally aired on May 7, 2018.
How long is Season 3 Episode 17 ('Trinity')?
The episode follows the standard broadcast runtime for Supergirl.
What happens in Supergirl Season 3 Episode 17?
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....