This week’s episode of Supergirl ended with Kara (Melissa Benoist) and Alex’s (Chyler Leigh) heartbreaking revelation that Jeremiah (Dean Cain) is actually allied with Cadmus. With the alien registry in their hands, the anti-ET organization is planning on slaughtering anyone not from this planet. It’s up to the girls to stop Cadmus once and for all and hopefully get their father back in the process.

In the photo gallery for next week’s episode, we see Jeremiah attempting to talk to Alex, a sweet moment between Kara and Mon-El (Chris Wood), and Supergirl having a conversation with Lena (Katie McGrath).

The trailer for the episode shows the beginnings of Cadmus’ plan (which includes the abduction of Winn’s new girlfriend), Alex and Jeremiah choosing sides, and an amazing reference to Cain’s former days as the Man of Steel!

Arrowverse Crossover: "Crisis on Earth X"

‘Exodus’ airs on March 6th at 8/7c on The CW.