Andrea doles out Adderall and teaches the girls The Secret, Tess struts her stuff during LA Fashion Week, and Alexis is arrested for her connection to The Bling Ring.

Everyone heads to Santa Barbara for the big vow renewal, Heidi performs her new song, Spencer compares the celebration to Burning Man, and Brody and Kaitlynn spend the entire weekend tackling gossip and defending their marriage.

The gang gossips about Brody and Kaitlynn's relationship, Brandon struggles with Ashley, Audrina revives her swimwear collection, and we get to meet Justin Bobby's dad.

Brandon reaches out to his father, Heidi and her faith return to the recording studio, the gang celebrates Heidi and Spencer's upcoming vow renewal, and Stephanie tries again to get an apology from Audrina.

Justin and Brandon get closer to their girlfriends, Audrina hangs with another boyfriend of yesteryear, Kaitlynn hosts a gala, and Heidi and Spencer celebrate their anniversary.

Audrina and Mischa grow closer, Brody goes off on Stephanie and the Pratts bond over it, and Justin brings a big surprise to Frankie's Friendsgiving.

Brody and Kaitlynn fight to save their home while the gang parties in Las Vegas, Mischa goes on an audition, Heidi returns to her music, and no one knows that hell is going on with Justin, Stephanie, and Audrina.

Brody releases a music video, Brandon goes on a date, Audrina's friend makes a play for screen time, and Spencer and Heidi throw a crystal party with the world's most expensive open bar.

Brandon throws a pool party for the boys, Bobbyrock performs, and Justin and Stephanie get closer while Brody and Spencer grow further apart.

Stephanie cries over Spencer, Mischa shuts down Perez Hilton's half-assed apology, Brandon wins the award for Most Mature, and Jason Wahler returns to The Hills looking finer than ever.