Trinity Supergirl : Season 3 Episode 17
TV-PG The CW 43m
Aired: May 7th, 2018 @ 9:00 PM EST on The CW
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.
