Dean begins seeing things which are only in his mind while Sam is convinced that his brother has caused him trouble.
The CW releases a promo of "Supernatural" that teases the first episode airing next year. "Sam, Interrupted" will be one serious episode with Sam being tied to the bed post and held inside the quarantine room of a house for the insane.
While the official synopsis is not yet released, it is known that a lot of the supernatural happenings will occur within the psych ward. There will be a "twitchy, anxious ball of nerves" former hunter named Martin Creaser who is staying as one of the residents and Dr. Erica Fletcher, a "beautiful, smart, credible psychiatrist in her 30s with a sweetly sympathetic manner who seems to understand Dean's conflict and pains."
"Sam, Interrupted" is to air on January 21, 2010. The title is a homage to the Angelina Jolie starring movie "Girl, Interrupted".