90210 - Season 4 - Eps 7: It's the Great Masquerade, Naomi Clark
Naomi has to work with her arch-nemesis Holly to throw a campus costume party, leading to unfortunate consequences. Navid's plan to bring down his Uncle Amal is threatened, while Silver discovers that political candidate Marissa Harris-Young is not who she seems. Meanwhile, Adrianna handcuffs herself to Dixon in an attempt to get him to stay sober and Annie must decide if she wants to give Patrick another chance.
About 90210

Title: 90210
First Air Date: 2008-09-02
Last Air Date: 2013-05-13
Status: Canceled
Rating: 5.67/10 (from 194 votes)
Language: EN
Seasons: 6
Total Episodes: 114
Network: The CW
Genres: Drama
Production Companies: CBS Studios
Synopsis
90210 revolves around several students at the fictional West Beverly Hills High School, including new Beverly Hills residents Annie Wilson and Dixon Wilson. Their father, Harry Wilson, has returned from Kansas to his Beverly Hills childhood home with his family to care for his mother, former television and theater actress Tabitha Wilson, who has a drinking problem and clashes with his wife Debbie Wilson. Annie and Dixon struggle to adjust to their new lives while making friends and yet adhering to their parents' wishes.
Cast

Shenae Grimes-Beech
Annie Wilson

Tristan Mack Wilds
Dixon Wilson

AnnaLynne McCord
Naomi Clark

Jessica Stroup
Erin Silver

Michael Steger
Navid Shirazi

Jessica Lowndes
Adrianna Tate-Duncan

Matt Lanter
Liam Court

Cassandra Church