Official CW synopsis
The privileged prep school teens on Manhattan's Upper East Side first learn that Serena van der Woodsen (Blake Lively, "The Sisterhood of the Traveling Pants") is back in town the way they learn all the important news in their lives -- from the blog of the allknowing albeit ultra-secretive Gossip Girl. No one knows Gossip Girl's identity, but everyone in this exclusive and complicated vicious circle relies on her website and text messages for the latest scoop. Even Serena's closest friend, Blair Waldorf (Leighton Meester, "Entourage"), is surprised to find that Serena has suddenly ended her selfimposed exile to boarding school and returned to Manhattan.

Good question. On the show, "Gossip Girl" is both a website and the person running the site. It is a website which publishes pictures and information about the teenage "Manhattan elite." Yes, like all schools have. No one knows who Gossip Girl is, but the character voice-over is done by Kristen Bell.

Dan Humphrey and Serena van der Woodsen
Nate Archibald and Blair Waldorf
Blair Waldorf and Chuck Bass
Blair Waldof and Marcus Beaton
Nate Archibald and Vanessa Abrams

Season One:
1-1 "Pilot" (09.19.07)
1-2 "The Wild Brunch" (09.26.07)
1-3 "Poison Ivy" (10.03.07)
1-4 "Bad News Blair" (10.10.07)
1-5 "Dare Devil" (10.17.07)
1-6 "The Handmaiden's Tale" (10.24.07)
1-7 "Victor/Victrola" (11.07.07)
1-8 "Seventeen Candles" (11.14.07)
1-9 "Blair Waldorf Must Pie!" (11.28.07)
1-10 "Hi, Society" (12.05.07)
1-11 "Roman Holiday" (12.19.07)
1-12 "School Lies" (01.02.08)
1-13 "A Thin Line Between Chuck and Nate" (01.09.08)
1-14 “The Blair Bitch Project” (04.21.08)
1-15 “Desperately Seeking Serena” (04.28.08)
1-16 “All About My Brother” (05.05.08)
1-17 “Women on the Verge” (05.12.08)
1-18 “Much ‘I Do’ About Nothing (05.19.08)

Season 2
2-1 "Summer, Kind of Wonderful" (09.01.08)
2-2 "Never Been Marcused" (09.08.08)
2-3 "The Dark Night" (9.15.08)
2-4 "The Ex-Files" (9.22.08)
2-5 "The Serena Also Rises" (9.29.08)

Serena van der Woodsen (Blake Lively)
Blair Waldorf (Leighton Meester)
Dan Humphrey (Penn Badgley)
Nate Archibald (Chace Crawford)
Jenny Humphrey (Taylor Momsen)
Chuck Bass (Ed Westwick)
Vanessa Abrams (Jessica Szor)
Lily van der Woodsen/Bass (Kelly Rutherford)
Rufus Humphrey (Matthew Settle)