Sneak Peek - Dean Faces his Worst Enemy

What could it be that Dean is facing next week? Demons? Vamps? Fallen angels? Read on to see what mortal enemy Dean is up against in this clip from "Supernatural" Episode 9.05, "Dog Dean Afternoon."

"Supernatural" Episode 9.05 - "Dog Dean Afternoon" (airs 11/5/13, 9-10pm)
While investigating two bizarre murders, Sam (Jared Padalecki) and Dean (Jensen Ackles) realize there is an eyewitness to both gruesome deaths - a German Shepherd. Anxious to find out if they are dealing with a witch, a skinwalker, or other supernatural monster, the guys look up a spell that could let Dean "communicate" with the dog.

Unfortunately, the spell comes with side effects that no one saw coming.

Tim Andrew directed the episode written by Eric Charmelo and Nicole Snyder.