Check out the 'Supergirl' Season 2 teaser

As we edge closer to the end of Supergirl Season 2, fans are hoping for an explosive finale and things are heating up for Kara and the gang. This week it gets personal when a mysterious villain kidnaps Alex, Kara’s adoptive sister. She’s threatened with death unless Kara uses her powers for evil and busts a notorious criminal out of prison. Meanwhile, Rhea is hanging out with Lena Luthor, and you know that’s not going to go to happy places.

Fortunately, Alex isn’t some dizzy and helpless damsel in distress, and is determined to save herself without the help of her super-powered sister. Reports say she’s down to employ a credit card in a very creative manner and use some Navy SEAL tricks to escape drowning.

Check out the teaser below