it's Bobby vs. Crowley on this Friday's new episode of Supernatural.

When the former realizes that the latter won't return his soul, Bobby takes action. He calls on Sam and Dean for help after uncovering one of the demon's darkest secrets. What could it be? Perhaps the official trailer below will shed light on the situation:

[video url="http://www.tvfanatic.com/videos/weekend-at-bobbys-promo/" title="Weekend at Bobby's Promo"] [/video]

Elsewhere, Bobby will come across a hunter with a series body problem. He's the only person who can help, as he tries to in the following clip:

[video url="http://www.tvfanatic.com/videos/weekend-at-bobbys-clip/" title="Weekend at Bobby's Clip"] [/video]

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