Serena enlists Charlie to go undercover Gossip Girl-style to determine why Dan and Blair are spending so much time together, and what role an unexpected visitor is playing in their lives. With Nate's help, Raina decides to go on a search for her long-lost mother. Chuck's hopes about his legacy are dashed with the reveal of devastating information from the past.
Two Hours Traffic - Noisemaker
The Ting Tings - Hands
The Vaccines - If You Wanna
Danica 'The Morning Star' Rozelle - Kiss Kiss Kiss
The Asteroids Galaxy Tour - Safety Dance
The Pierces - We Are Stars
Oh Land - White Nights