Take a deep breath in extended Supergirl trailer and new poster

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Apr 27, 2017, 9:50 PM EDT (Updated)

The CW has debuted a tense new extended trailer as well as a poster for the next installment of Supergirl.

Simply titled “Alex,” next week’s episode will go all Saw on us and see the Girl of Steel’s (Melissa Benoist) beloved sister Alex (Chyler Leigh) get kidnapped by a mysterious villain and put into a glass prison Houdini would be proud of that’s slowly but surely filling up with water. Gasp!

See, mysterious villain’s dad (do my eyes deceive me, or is that Gregg Henry?) is in prison, and he wants Supergirl to break him out or Alex dies. In order to save her, Kara and Alex’s girlfriend Maggie (Floriana Lima) will have to combine their forces. But wait! There's more! Check out the synopsis:

“Alex (Chyler Leigh) is kidnapped and the kidnapper threatens to kill her unless Supergirl (Melissa Benoist) releases a notorious criminal from prison. Supergirl and Maggie (Floriana Lima) have always had different approaches to apprehending criminals but this time they must work together to save Alex. Meanwhile, Rhea (guest star Teri Hatcher) has an interesting proposal for Lena (Katie McGrath).”

Supergirl airs on Mondays at 8 p.m. on The CW.

(via Coming Soon)