The CW has released the official synopsis for Supernatural season 9, episode 9, titled “Holy Terror.”

The official press release has the following information about the episode:

AN ANGEL WAR BEGINS — After a massive angel slaughter occurs, Sam (Jared Padalecki) and Dean (Jensen Ackles) arrive at the scene to investigate and are surprised to run into Castiel (Misha Collins). While investigating, Castiel is captured and tortured. Meanwhile, Dean questions Ezekiel’s demands and wonders if it might be time to tell Sam the truth. Thomas J. Wright directed the episode written by Eugenie Ross-Leming & Brad Buckner (909).

It’s worth nothing that this is Supernatural mid-season finale, so it will no doubt end on an intense cliffhanger.

Another fun note is that it looks like a certain angel will be returning in this episode as well:

What will Metatron be up to, now that he has Heaven all to himself? Might he be responsible for the angelic slaughter? We haven’t seen him since the season 8 finale, so it will be interesting to see how the Heavenly scribe plays into this story.

Also interesting is “Ezekiel’s demands.” Will we finally get some indication of his true motivations, whether that means refusing to leave Sam once he’s healed or something else? It would make sense for Dean to fill Sam in on his angelic hitchhiker in the mid-season finale, leaving the audience hanging on Sam’s reaction.

Supernatural season 9, episode 9 “Holy Terror” airs Tuesday, December 3 at 9:00 p.m. ET.

Are you looking forward to ‘Supernatural’ season 9, episode 9 ‘Holy Terror’?