A couple of episodes ago, viewers met Crowley's (Mark Sheppard) mother, Rowena, after his son was introduced last season. In these new "Supernatural" season 10 photos and trailer, another family member will be introduced!

In episode 7, Hannah (Erica Caroll) decided to return to Heaven to give her vessel the freedom to go back to her husband. Hannah's epiphany also made Castiel (Misha Collins) think about his own vessel's life - Jimmy Novak.

According to The CW synopsis for episode 9, "The Things We Left Behind," Castiel will meet Jimmy Novak's daughter, Claire (Kathyrn Love Newton) "in a group home and she convinces him to break her out." When she runs away from him, however, he has no choice but to ask for help from Sam and Dean (Jared Padalecki, Jensen Ackles).

Meanwhile, the King Of Hell will reportedly face "his biggest challenge yet."

The trailer, on the other hand, teases the Mark of Cain's effect on Dean. Will he become Demon Dean again?

Find out what will happen on December 9, Tuesday, 9 p.m. on The CW.

Watch the trailer below and browse through the "Supernatural" season 10 photos in the photo gallery to see Castiel's daughter.