Below is a two-and-a-half minute sneak preview of this week's Gossip Girl, featuring lots of clips and commentary from producers Joshua Safran and Sara Goodman.

In "Shattered Bass," we can look forward to (or dread) the return of Jack Bass, as well as some familiar Constance faces, since the episode features an alumni event.

In the first half of this two-part season finale (the second half airs May 16), we learn more about Charlie's past and Cyrus and Eleanor throw B an engagement party.

What will become of Dan and Charlie, and of Nate and Raina? Will Jack push troubled nephew Chuck over the edge? Watch the preview and leave a comment below:

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