The second season of 90210 premiered on September 8, 2009 and ended on May 18, 2010. The season picks up at the end of summer after the events of last season's dramatic prom party. Rob Estes, Shenae Grimes, Tristan Wilds, AnnaLynne McCord, Ryan Eggold, Jessica Stroup, Michael Steger, Jessica Lowndes and Lori Loughlin all return as series regulars from season one, while Dustin Milligan was released from his contract for "creative reasons."
The second season focuses on the West Beverly Hills High school group as they begin their junior year and go through dramatic changes and surprises that will change their lives. Anne must deal with the consequences of the hit and run when she finds out the man's nephew goes to West Bev. Meanwhile, Naomi's sister, Jen, continues to manipulate and use her for whatever she can; Dixon finds a new girlfriend; Silver and Kelly must come to terms wth devastating news; Adrianna begins a journey of independent and personal growth.
Special Guest StarEdit
|01||To New Beginnings!||2.56||September 8, 2009|
Forced to attend summer school following the police crashing Naomi's after-prom party, Naomi, Silver and Adrianna form a tight bond with one another.
|02||To Sext or Not to Sext||2.42||September 15, 2009|
|Naomi, still upset at Annie, considers sending out a mass sexually explicit text to get back at her.|
|03||Sit Down, You're Rocking the Boat||2.17||September 22, 2009|
|Annie, humiliated by the mass sext message, sets out to prove that Naomi sent the message.|
|04||The Porn King||2.46||September 29, 2009|
|Dixon and Sasha head to Napa for the weekend, but a flat tire on the way home leads to trunk of porn as well as growing lies.|
|05||Environmental Hazards||2.09||October 6, 2009|
|Naomi learns that her test scores may not be high enough for her to be accepted into CU.|
|06||Wild Alaskan Salmon||2.38||October 13, 2009|
Kelly and Silver deal with news that their mother, Jackie, is suffering from breast cancer.
|07||Unmasked||2.25||October 20, 2009|
It's Halloween, and Adrianna channels Marilyn Monroe to help deal with her broken relationship with Navid.
|08||Women's Intuition||1.92||November 3, 2009|
|Navid and Gia launch an investigation into student drug use at West Beverly, which leads them to Annie's boyfriend, Jasper.|
|09||A Trip to the Moon||2.06||November 10, 2009|
|With the help of Teddy, Jackie surprises Silver with a half-brother celebration that takes her back to her childhood birthday parties.|
|10||[[File:||To Thine Own Self Be True||2.10||November 17, 2009|
|Annie leaves Debbie and Harry surprised when she informs them that she would like to invite Jasper over for dinner.|
|11||[[File:||And Away They Go!||2.15||December 1, 2009|
Navid has no memory of who pushed him down the stairs. Adrianna visits Navid at the hospital, which leads her to make a life-changing decision.
|12||Winter Wonderland||1.91||December 8, 2009|
Navid, thinking Jasper pushed him down the stairs, asks Adrianna to help him reveal Jasper for what he is.
|13||Rats and Heroes||1.70||March 9, 2010|
Naomi returns from her vacation in St. Bart's excited to spend time with Liam, which leads to the two getting up close and personal in his new boat.
|14||Girl Fight!||1.86||March 16, 2010|
Naomi enlists Ivy's help in reducing the awkwardness with Liam, and the three decide to go on a hike - something Naomi has never done.
|15||What's Past Is Prologue||1.51||March 23, 2010|
Gia encourages Adrianna to audition for a new band and admits she has a crush on Adrianna.
|16||Clark Raving Mad||1.48||March 30, 2010|
Naomi immediately butts heads with the Blaze's new faculty adviser, Mr. Cannon, and is reprimanded in front of her peers.
|17||Sweaty Palms and Weak Knees||1.34||April 6, 2010|
|Annie tries to cope with Jasper's decision; driven by jealousy, Dixon and Ivy decide to go on a fake date.|
|18||Another, Another Chance||1.45||April 13, 2010|
|Naomi's little white lie has become the talk of the school. When she's forced to testify in front of the school board, she drops a bomb.|
|19||Multiple Choices||1.54||April 27, 2010|
As a result of falsely accusing her faculty adviser of sexual harassment, Naomi is now required to complete community service.
|20||Meet the Parent||1.43||May 4, 2010|
Adrianna stuggles to write a new song for Laurel and turns to Navid for support, forcing Navid to realize he still has feelings for her.
|21||Javianna||1.45||May 11, 2010|
|Adrianna's new romance with pop star Javier continues to blossom, while Navid continues to work up enough courage to tell her how he feels.|
|22||Confessions||1.60||May 18, 2010|
|Teddy seeks revenge after learning that Spence tried to bribe Silver; Liam and Annie share their darkest secrets; Ryan receives a mysterious package.|
The second season focuses on the West Beverly Hills High group as their junior year and go through dramatic changes and surprises that will change their lives. Adrianna's personal life was as dramatic as any role she could hope to play; Annie, the good girl from Kansas who feels lost; Dixon, who struggled to find his own voice; Liam, the troubled New York transplant who abhors the decadent materialistic world of Beverly Hills. Naomi was also attacked by her teacher in the finale.
Season 2 premiered to 2.44 million viewers and a 1.2 Adults 18-49 rating. 90210 was the #1 in the percentage increase for the 18-49 demo between March 22 and March 28, increasing from a 0.7 Live+Same Day rating to a 1.1 rating. DVD ratings for the show sometimes double its broadcast ratings.