Spoilers Sweeties! Official synopsis - Supernatural 9.12 "Sharp Teeth"

Here's the official synopsis for 9.12 "Sharp Teeth".

If you remember, the new season 9 promo had Garth in it, so now we know that promo comprised the first 3 episodes of the return season. 

GARTH RETURNS - After finding out that Garth (guest star DJ Qualls) is in the hospital, Sam (Jared Padalecki) and Dean (Jensen Ackles) go to check on him. Still carrying the guilt over Kevin, Dean lays into Garth about disappearing and demands to know where he's been. Garth makes an excuse and then hightails it away from the guys. Confused as to why Garth would run from them, Sam and Dean do some investigating and are stunned by what they find. John Showalter directed the episode written by Adam Glass (912).

Ooooo! So where has Garth been do you think? What are the theories? What do you think the title "Sharp Teeth" refers to?

Sounds like Dean is going to be even more concerned with keeping his friends and loved ones close than usual after what happened with Kevin (and Sam).

Great director writer team of John Showalter and Adam Glass! John last directed the season opener, "I Think I'm Gonna Like It Here".

The first 3 episodes of the new season look like they're going to be fantastic!

Also, I just love that Sam and Dean are together... Love. LOVE I TELLS YA! Let's hope that they're emotionally together too...

Yay!

Let me know your Garth/title theories!
-sweetondean