Have you been watching Supergirl this season? We have seen some shocking revelations in the last couple episodes before the holiday break. Supergirl returns on January 4 with a new episode entitled "Blood Bonds."
If you haven't watched the last couple episodes, there will be some spoilers in the promo released for the next week's episode.
Cat Grant has figured out Kara is Supergirl. Obviously Kara will try to deny it. Cat has been a little protective over Supergirl's image and has been warming up to Kara but would she keep the secret to herself or use it to make a big headline in the news?
Kara and her adoptive sister, Alex, have been suspicious of Hank Henshaw, the director of the DEO because they found out he knows something about the death of Alex's father. Henshaw revealed to Alex he was really a Martian known as J'onn J'onzz. Looks like Kara finds out about his secret this episode as well.
Supergirl airs on CBS Monday at 8:00 ET/PT.