- „I will not be in London forever... Yeah, right”
- —Dylan learns that Brenda won't return
The Walshes welcome Valerie Malone, a young and charming family friend from Buffalo, who moves into Brenda's room after she leaves for England. But unknown to everybody, Valerie is secretly revealed to be a manipulative, cynical and callous woman with a taste for drugs and hard liquor. Meanwhile, Donna returns from her summer stay in Texas and claims that she's over with David, who's doing a video for his film class about his travels during the summer. But that evening, Donna has an emotional breakdown when she runs into David at a nightclub.
Steve returns from his summer vacation in Hawaii and decides to pursue Kelly, unaware that she's involved with Brandon. Dylan returns from his summer stay in Baja, Mexico and is revealed to have gone back to drinking since learning that Kevin and Suzanne have swindled him and skipped town with all of his money, and Erica. Also, Andrea and Jesse finally take their new baby daughter, Hannah, home.
- Jason Priestley as Brandon Walsh
- Jennie Garth as Kelly Taylor
- Ian Ziering as Steve Sanders
- Gabrielle Carteris as Andrea Zuckerman
- Luke Perry as Dylan McKay
- Brian Austin Green as David Silver
- Tori Spelling as Donna Martin
- Mark Damon Espinoza as Jesse Vasquez
- Tiffani Thiessen as Valerie Malone
- Carol Potter as Cindy Walsh
- James Eckhouse as Jim Walsh
Special Appearance By
- Howie Long as Himself
- Stephanie Beacham as Iris McKay (voice)
- Ron Fassler as Chad
- Claudia Lonow as Hairdresser
- Vance Valencia as Juarez
- „Kelly is the great love of my life. I'm gonna do everything in my power to win her over and you gotta help me”
- —Steve to Brandon
- „You know, I used to really envy Brenda. And pray that my life could be as charmed as hers”
- —Valerie to Brandon
- „Seems kind of dumb, but – bet he gives good credit card”
- —Valerie to Ginger about Steve
- „The Walshes? They're harmless. I'm sure everything will be cool. As long as they don't try and pull any parental trips on me. But if they do... you know me. I'll just put on a happy face... and dance”
- —Valerie to Ginger
- Brenda tried to call Dylan while he was in Baja, to tell him that she's staying at RADA for at least another year.
- Dylan gets this message from Brandon
- Iris McKay leaves Dylan a message saying how stupid he was to lose the money. Yeah. Big help, "mom".
- Valerie was Brandon's first kiss
- Donna and Kelly didn't speak all summer because Kelly tried to defend David's actions
- Brandon and Kelly tell Steve, Donna and Valerie that they're together
- David got crabs from April as punishment from the universe for cheating on Donna
- night in my veins | THE PRETENDERS
- regular thing | OVIS
- back & forth | AALIYAH
- Tiffani-Amber Thiessen joins the cast as Valerie Malone, and Mark Damon Espinoza becomes an official cast member
- Alicia Silverstone and Alyssa Milano were initially considered for the role of Valerie. Drew Barrymore was offered the part.
- Tiffani-Amber Thiessen had just finished working on Saved by the Bell: The College Years. Both shows were set at the fictional California University, so she ends SBTB at the end of her freshman year at CU and now joins 90210 in her sophomore year.
- Tiffani-Amber Thiessen played a character named Kelly on Saved By The Bell and Valerie on Beverly Hills, 90210, while Jennie Garth portrayed Kelly on the series and later starred on What I Like About You... as Valerie.
- The video for "Cantaloop (Flip Fantasia)" by Us3 plays over the closing credits to promote the Beverly Hills, 90210: The College Years soundtrack.