SEASON: 1
EPISODE: 15 - Desperately Seeking Serena
SYNOPSIS
When former friend Georgina Sparks returns to town, Serena's world is turned upside-down. Dan sees Serena's preoccupation, but wrongly assumes she is worried about Chuck becoming her new sister-in-law. Meanwhile, Nate unexpectedly connects with Vanessa and Jenny develops a crush on a local dog-walker, who she decides is her ticket to long-term popularity.