Fresh off his amazing performance in "The Debarted," Ed Westwick was spotted filming scenes as Chuck Bass recently. But who's the female he's talking to?

Chuck in the midst of what looks like a heated discussion.

We're guessing, based on the developments at the end of the last episode, that you have a pretty good idea who this is. But follow the jump to see for sure:

Yup, that's Laura Harring, who was recently cast as Chuck's mom (supposedly) on the show. She was believed to be dead, until Chuck saw her at Bart's grave.

But is she really Chuck Bass' mom? The conspiracy theorists are already floating the idea that she could be an impostor, working in connection with Jack Bass.

Chuck's uncle, played by Dexter star Desmond Harrington, will be reprising his role in the spring, so that may have merit. What do you think? Share with us!

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