With all the talk of Chuck and Blair dominating many Gossip Girl discussions following this week's chilling episode, another development hinted at throughout the first half of the season has been put on the back burner ... but apparently not for much longer.

A new poster for CW sweeps week features Serena and her long lost father, played by William Baldwin, finally reunited. We're not 100 percent sure of the date of Baldwin's first appearance, however, the April 26 episode is called "It’s a Dad, Dad, Dad, Dad World," so ...

The poster's tagline? Daddy's back and they've made up ... everything.

Tell us what you make of that cryptic teaser and the poster below:

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