In the first preview of Monday's episode of Gossip Girl, "Carrnal Knowledge," Chuck Bass' latest venture into the seedy New York underworld was the primary focal point.

In these next two previews posted below, it's Blair Waldorf's plot to take down her teacher, Rachel Carr - with the help of an unexpected secret agent of sorts: Dorota.

Vintage drama and Gossip Girl quotes are sure to follow ...

[video url="http://www.gossipgirlinsider.com/videos/carrnal-knowledge-sneak-preview-2/" title="Carrnal Knowledge Sneak Preview #2"][/video]

Follow the jump for the next preview ...

[video url="http://www.gossipgirlinsider.com/videos/carrnal-knowledge-sneak-preview-3/" title="Carrnal Knowledge Sneak Preview #3"][/video]

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.