Get excited Grey's Anatomy fans — the Season 13 finale premieres tonight!

And what better way to get ready for what is anticipated to be one of the biggest episodes yet than by taking a look back at the iconic show's stars then and now?!

The cast, however, is in big trouble at Grey Sloan Memorial Hospital. In last week's episode, we saw Dr. Stephanie Edwards trying to save a patient she lit on fire (after he held her hostage with a scalpel to her throat), and in the very last scene, Meredith Grey (Ellen Pompeo) watches an explosion out of the hospital window from her car.

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https://www.youtube.com/watch?v=b5cVgQR135E

In the promo for tonight's finale titled "Ring of Fire", Meredith desperately tries to find a terrified little girl who is lost somewhere in the hospital. The missing girl is the same one who was with Dr. Edwards when she lit the patient on fire (she wandered away from her parents).

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In the clip, Ben Warren (Jason George) also rushes into the burning hospital while Jackson Avery (Jesse Williams) frantically searches for Dr. Edwards. So intense, we can't wait to watch tonight at 8 p.m. on ABC!

Click through the gallery below to see the Grey’s stars then and now!