Season 1 Episode Guide of '90210'

DVD cover of 90210 first season, young people in a pool

Photo from Amazon 

Whether you've missed an episode or the entire first season of the CW drama 90210, we've got you covered with this handy episode guide to help viewers keep track of the various happenings in our favorite zip code.

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1x01 "We’re Not in Kansas Anymore" (OAD: 9/2/08)

Meet the Wilson family, who has just moved to Beverly Hills from the Midwest. Harry Wilson, the family patriarch, will become the new principal at West Beverly Hills High School. Annie and Dixon Wilson aren't exactly thrilled to begin a new school, and having their father as the principal doesn't make it any easier.

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1x02 "The Jet Set" (OAD: 9/2/08)

As the series begins to unfold, we meet the various main characters: Naomi, the spoiled rich girl who is dating Ethan, the hunky athlete who is cheating on her. Silver (a.k.a. Erin Silver) is a no-holds-barred school gossip blogger and Kelly Taylor's sister, and Navid is the newspaper editor.

Brenda Walsh returns to Beverly Hills and stays with her old BFF Kelly Taylor, who we learn has a 4-year-old son!

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1x03 "Lucky Strike" (OAD: 9/9/08)

Annie and Dixon's hot Friday night plans are dashed when their parents insist on a family bowling night. Being the crafty teenagers that they are, the two arrange to have their friends meet them at the bowling alley and soon everyone joins in on the Wilson family fun night.

Annie finds herself attracted to both Ty and Ethan. Just as things seem to be moving forward with Ethan, Naomi arrives at the bowling alley in bad shape and in great need of a friend after learning her father is having an affair.

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1x04 "The Bubble" (OAD: 9/16/08)

The director of West Beverly's musical, Spring Awakening, is introduced. Dixon gets a part-time job at the Peach Pit.

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1x05 "Wide Awake and Dreaming" (OAD: 9/23/08)

Opening night for Spring Awakening.

At the after-party, Adrianna ruins Annie and Ty's special night, and the two break up.

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1x06 "Model Behavior" (OAD: 9/30/08)

Kelly, Ryan, Brenda and Harry confront Adrianna about her substance abuse, but the teen denies having a problem.

Kelly gets a mysterious call that makes her second guess her budding relationship with Ryan.

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1x07 "Hollywood Forever" (OAD: 10/7/08)

Annie and Ethan get to know each other better when they are paired up for a class project where they must take care of a baby.

Ryan realizes how much he cares about Kelly after she takes off to see Dylan.

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1x08 "There is No Place Like Homecoming" (OAD: 10/28/08)

It's dance time at West Beverly! Ethan and Annie decide to go to the dance together — without actually "going together."

Tracey puts the moves on Harry and Debbie decides to confront her after some coaching from Tabitha.

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1x09 "Secrets and Lies" (OAD: 11/4/08)

Annie and Dixon get the shock of their lives when Harry and Debbie tell them about the brother they never knew they had.

Adrianna and Navid become closer, but things get awkward when she gets the wrong idea about his intentions.

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1x10 "Games People Play" (OAD: 11/11/08)

Ryan and Kimberly's secret relationship gets outed by the student who saw them kissing. In order to keep Kimberly's cover from being blown, Harry gives Ryan a leave of absence. When Kelly returns from visiting Dylan, she has it out with Ryan after learning that he kissed a "student."

Navid introduces Adrianna to his family. Her feelings for him deepen when she learns that he's still a virgin.

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1x11 "That Which We Destroy" (OAD: 11/18/08)

Annie and Naomi's heated argument gets put on hold as they try to deal with the arrival of their half brother Sean. Harry immediately welcomes his "son" with open arms and invites him to move in with the family.

Naomi makes some new friends, who make it clear their friendship is on a conditional basis.

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1x12 "Hello, Goodbye, Amen" (OAD: 1/6/09)

Naomi and Annie battle it out over who spends the most time with Sean. Although the family seems to be getting along well with Sean, Annie is put off when she overhears Sean on the phone. Her suspicions are further raised when Sean tells Harry that he must come up with a large sum of money or he'll be killed.

Annie's suspicions ring true when Harry discovers that Sean was a fraud.

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1x13 "Love Me or Leave Me" (OAD: 1/13/09)

Debbie is furious when Tabitha buys the kids a car without discussing it with her first. Annie and Ethan take a trip to Tabitha's house in Palm Springs with full the intention to take their relationship to the next level (which doesn't happen).

After learning that Tabitha encouraged Annie to go to Palm Springs, Harry and Debbie hightail it up there, only to find Annie and Ethan sleeping in separate rooms.

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1x14 "By Accident" (OAD: 1/20/09)

Kelly and Naomi stand by Adrianna as she deals with her situation. They encourage her to reveal the baby's father, who turns out to be Ty!

Ethan is involved in a car accident while on the phone with Annie.

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1x15 "Help Me Rhonda" (OAD: 2/3/09)

Adrianna tells Ty that she's pregnant, and he's the father. Once he gets over his initial shock, Ty tells her he's there for her and that his parents will be as well. Although she still hasn't broken the news to her mother, Adrianna meets with Ty's parents, who immediately take charge of the situation.

When Ty's mother oversteps her boundaries, Adrianna's mother gets involved. Surprisingly, she handles the pregnancy news better than expected.

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1x16 "Of Heartbreaks and Hotels" (OAD: 2/10/09)

It's Valentine's Day and love is in the air!

Adrianna settles in for a night with only chocolate to keep her company, but the night takes a turn for the better when she gets a surprise visitor.

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1x17 "Life's A Drag" (OAD: 3/31/09)

Naomi continues to pursue Liam and offers to be his math tutor in a desperate attempt to get some time alone with the hunk. When Liam takes her on a wild night of drag racing, will her obsession turn to terror, or turn her on that much more? Is Silver losing her mind? That is the general consensus when a video assignment turns into a scary/obsessive love story featuring Dixon. Annie and Ethan's relationship hits the skids when Adrianna reveals that she saw Ethan and Rhonda kissing.

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1x18 "Off the Rails" (OAD: 4/7/09)

In this Jason Priestley directed episode, Ryan and Kelly go in search of Silver. Their search brings them to Kelly's mother's home, where the two women share a heated exchange. Dixon tells his parents what has happened with Silver and they are none too pleased. Annie and Ethan's relationship continues to crumble. Adrianna and Navid try their hand at parenting when they babysit Kelly's son — and they are surprised at how natural it comes to them.

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1x19 "Okaeri, Donna!" (OAD: 4/14/09)

Donna Martin returns! Donna pays Kelly a visit from Japan, and we learn that all is not well between her and David. Diablo Cody (who appears in this episode) asks Donna to design a dress for her to wear on the red carpet. Dixon and Annie take a road trip to visit his biological mother. Ethan spends his spring break volunteering with Habitat for Humanity. When Liam joins the cause as well, Naomi signs up so she can spend some time with her new obsession — and it's not exactly going to go very well.

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1x20 "Between a Sign and a Hard Place" (OAD: 4/21/09)

Donna is faced with a difficult decision — should she return to David in Japan, leave him for good and move back to Beverly Hills for her fashion career? Liam continues to be a bad influence over Ethan. Adrianna and Navid interview prospective adoptive parents for her baby. Annie and Naomi decide to become friends again.

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1x21 "The Dionysian Debacle" (OAD: 4/28/09)

Adrianna and Navid shock their parents when they reveal their wedding plans. Naomi is thrilled when her sister Jen returns to Beverly Hills — as are the Wilson's, who are at their wits end with having Naomi as a houseguest! Annie and Naomi go on a double date, where Liam makes a move on Annie.

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1x22 "The Party's Over" (OAD: 5/5/09)

The Beverly Hills gang throws Navid and Adrianna bachelor and bachelorette parties. While Adrianna's involves mostly food, Navid's party involves the usual debauchery at a burlesque club. Dixon and Silver's relationship continues to go downhill. The chemistry between Jen and Ryan is apparent, as is between Ethan and Silver.

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1x23 "Zero Tolerance" (OAD: 5/12/09)

Prom night has finally arrived! Liam asks Naomi to the prom after Kelly and Harry talk to him about not being involved in typical teenage activities. The ladies get fabulous makeovers by a famous stylist, where Naomi gushes about her relationship with Liam. Dixon is nominated for prom king, and Silver winds up winning prom queen. As she accepts her crown, Silver makes a heartfelt speech denouncing the meaning of the whole prom court idea, a move that upsets Dixon. Annie goes with Charlie, who gets very upset when he realizes she doesn't look at him in a romantic way.

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1x24 "One Party Can Ruin Your Whole Summer" (OAD: 5/19/09)

Adrianna goes into labor at the prom. Annie's night turns into a nightmare when some of the BH students gang up against her when they believe that she spilled the beans about the whereabouts of an after-prom party. Dixon has had it with Silver where he catches her in an intimate moment with Ethan (who reveals his true feelings to her). Liam, believing that Naomi betrayed his trust, sleeps with Jen. Naomi catches Liam cheating on her, but believe he was with Annie and a huge fight ensues. Annie is completely humiliated at the party and leaves, but not before grabbing a bottle of alcohol. In the early hours of the morning, a drunken Annie is driving, hits a pedestrian and keeps on driving.