The CW Television Network has released the official synopsis and promotional photos for the upcoming seventeenth episode of Supergirl‘s current season, an episode titled “Trinity” and you can check it out below.
“Trinity” — (8:00-9:00 p.m. ET) (TV-V) (HDTV)
SUPERGIRL TAKES ON ALL THREE WORLDKILLERS – Still reeling after learning about Lena’s (Katie McGrath) secret, Supergirl (Melissa Benoist) asks Guardian (Mehcad Brooks) 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. Caitlin Parrish & Erica Weiss directed the episode with story by Jessica Queller and teleplay by Caitlin Parrish & Derek Simon (#317). Original airdate 5/7/2018.
Supergirl airs on Mondays, on The CW.