Jared Padalecki's cue to costar Jensen Ackles was to tap on the roof of the car, interrupting Dean's mermelada session. But for one take, Jared had this thought: What if I didn't give the cue? What would Jensen do?
The publicist also says, rather cagily, that in the meantime fans and viewers can rest assured that this surprise is going to be something unexpected that the fans/viewers are going to LOVE!
Sam and Dean investigate the mystery of several men who apparently died of fright; after Dean becomes infected, Sam and Bobby must find the root of the disease. Episode preview, featuring Spoilers & Promo