Touch of Eva Nate decides to confront Juliet when he thinks she is keeping a secret from him; Blair tries to undermine Chuck's newfound happiness; Dan is torn between his feelings for Serena and Vanessa.
The Undergraduates Blair is in for a few big surprises on her first day at Columbia; Serena becomes suspicious of Juliet (Katie Cassidy); worried about Dan, Rufus decides to take matters into his own hands.
