Watch the Promo for Supergirl “Trinity”

The promo for the next new episode of Supergirl has been released. The episode is called, “Trinity” and it will air on Monday, May 7.

In the episode, “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.”

What did everyone think of tonight’s episode?

Source: CW