Lauren returns to her questionable hairstyle comfort zone, Heidi stumbles at a Bolthouse event, Audrina gets a castle of her own, and Frank and Meredith confuse The Hills timeline.

Cameron fails to defend Stephanie in front of Brody, Chiara acts as the voice of reason, Justin redeems himself slightly after Cabo, and Audrina sends Corey packing.

The gang lives it up in Cabo, Justin and Audrina fight over a hair accessory, Stephanie introduces her new boyfriend to Spencer and Heidi, Meredith recounts her trip to LA, and Frank gets lit.

Life gets busy, work requires a trip to Los Angeles, and Frank and Meredith are forced to take a break.

The gang parties in Malibu, Heidi tells Holly to move out and pins it on Spencer, and Audrina rekindles her romance with Corey while holding out for Justin.

Lauren hits the town with Holly, Holly encourages Heidi to write Lauren a letter, Audrina plays the field, and Diana Metzger joins Frank and Meredith.

Heidi and Spencer get a surprise visitor, Lauren and Brody assume that everything is their business, and Stephanie and Doug fail at covering up their tryst.

Lauren travels to Italy, Audrina and Lo become friends overnight, Heidi and Spencer return to the social scene, and Stephanie makes a play for Doug.

Audrina works a big event for Epic, Lauren reunites with Holly, Heidi misses having friends, and Stephanie continues to make questionable style choices.

Spencer tells Holly to move out, Whitney styles a special guest, Lauren cries black tears over her relationship with Audrina, and Frank shares his final thoughts on Whole 30.