We agreed to work the case, we didn't agree for you to be a dick the whole time.

Sam and Dean are not exactly getting along in the following clip from Supernatural.

While the brothers will head to Lily Dale this Friday, a town filled with psychics, many of whom are being murdered by an angry spirit, they will also face problems of their own. Which sibling refers to the other as a "bitch?" What is the fight over? Watch this sneak peek and then check out the official CW preview for "The Mentalists."

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.