90210 is an American teen drama television series developed by Rob Thomas, Jeff Judah and Gabe Sachs, and the fourth series in the Beverly Hills, 90210 franchise created by Darren Star. 90210 is the first series produced by CBS Productions under the company's re-launch, but is now produced by CBS Television Studios. The series premiered on The CW on September 2, 2008 with a two episode special.
 
The series 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. Annie and Dixon struggle to adjust to their new lives while making friends and yet adhering to their parents' wishes. During its first two seasons, 90210 featured cast members from the original series, including Jennie Garth, Shannen Doherty, Tori Spelling, Ann Gillespie, and Joe E. Tata. However, after the conclusion of the second season, there are no plans for any original stars to return. DVR ratings for the series have sometimes doubled its broadcast ratings.
 
On May 3, 2012, The CW officially renewed 90210 for a fifth season.It premiered on October 8, 2012.

Conception

The project was put on the fast track by the network[clarification needed], and an order of the pilot was expected by the end of the month. The Beverly Hills, 90210 creator, Darren Star, was announced not to be involved with the project. The only surviving element from the original series was believed to be Creative Artists Agency, the talent agency which conceived the spin-off idea. Veronica Mars creator Rob Thomas was in negotiations to write the pilot and Mark Piznarski was in talks to direct.