Last week, we gave you a hint at the surprise broadcast following Supernatural's Yellow Fever episode, which will air on Thursday, October 23 at 9 PM. Today we have another teaser video that will lend some insight into this surprise broadcast. Click below for your new clue into this mystery.

Sam and Dean investigate the mysterious deaths of several men who seemingly died of fright. Dean becomes infected with it starting as anxiety then leading to a full-blown terror which ends in death. Sam and Bobby race against time to save Dean.

RELATED: Jared Padalecki Walks Back His Supernatural Prequel Reaction