Lizzie invites the ladies to a dinner party, where Heather and Shannon come face-to-face.

Vicki tries to move forward when her divorce is finalized in the Season 9 opener. Also: Tamra's gym is open for business; and Heather invites Vicki and Tamra to Hawaii for a weekend getaway, but friction develops over wardrobe choice.

A Hawaii getaway concludes with questions posed to Vicki about her relationship. Back in the OC, Tamra hosts a spooky get-together featuring tarot-card readings, and newbie housewife Shannon Beador invites the ladies to a home-cooked meal.

Dinner continues at Shannon's OC abode. In addition, Shannon's marriage is dissected by the others; Heather departs for the holidays; and the ladies address their grievances at a "fakes-giving" feast.

Tamra and Heather meet Lizzie, a former beauty queen; Shannon is surprised; Vicki focuses on her business; Tamra and Eddie talk.

Shannon and Vicki connect over holistic healing. Meanwhile, Heather organizes a hoedown-theme bash; Tamra pressures her son to be more responsible; and tension mars a holiday outing.

Tension simmers between Heather and Shannon in the wake of their dispute over seating at a dinner. Elsewhere, Vicki struggles with her daughter's decision to move; and Heather throws a hoedown bash, where a mechanical-bull mishap creates drama.

Vicki travels to Oklahoma to help her daughter Briana look for a house. Heather and Lizzie meet with their children. Shannon and Heather also meet to discuss their issues. Shannon invites Lizzie for a makeup lesson at her house, Tamra discovers something shocking about her son.

Drama marks Shannon's holiday bash. Elsewhere, a downcast Vicki deals with Briana's move to Oklahoma, and a harsh reality hits Tamra.

Tamra reveals her real reason for being upset with Heather. Meanwhile, Briana and Ryan surprise Vicki with the gender of their baby and later, Shannon turns to Tamra for support when her husband, David, sends her a shocking e-mail about their relationship.

Shannon confides in Tamra, only to discover rumors are spreading about her marriage. Meanwhile, Lizzie finds herself in the middle of Shannon and Heather's feud; Vicki and Brooks vacation in Puerto Vallarta; and Tamra tries to teach Eddie about newborns.

A banished Shannon journeys to join Vicki and Brooks in Puerto Vallarta. Meanwhile, Lizzie struggles to juggle work and family; Heather hires a personal chef; and Tamra's effort to teach Eddie a lesson in fatherhood backfires.

Shannon and David try to get back on the right track with Vicki's help; Heather's family expands.

Tension rises between Shannon and Heather at Lizzie's dinner party; Vicki and Briana see a therapist; Ryan's news shocks Tamra.

Heather and Tamra decide to take a trip to Bali; Lizzie has a terrible birthday; Heather throws a Valentine's Day dinner party.

Balinese bliss becomes a rumble in the jungle when the ladies set out on a trip to Bali. Heather and Shannon hope for peace and relaxation, but things escalate when Shannon gets some shocking news. Meanwhile, Vicki hears about a scandalous statement allegedly made at the Valentine's Day dinner and Lizzie reveals her true thoughts about Tamra.

The ladies enjoy their time in Bali; Shannon and Lizzie realize Tamra has poisoned their new friendship; Vicki hears that Tamra has been talking about Brooks; the ladies confront Tamra.

At dinner at Vicki's, tensions still run high; Tamra faces Brooks; an apology from Shannon's boyfriend starts a fight; Vicki's daughter and Tamra's son leave O.C.

Andy Cohen hosts as the California ladies come together to deal with the big issues and conflicts of the season.

There are laughs, tears and tirades in part two of the reunion as Shannon explains her holistic ways as only Shannon can do. The ladies argue over whether Lizzie is more drama queen than beauty queen, and the gloves are off when Tamra faces her accusers on whether or not she's to blame for much of this season's conflicts.

Never-before-seen footage from season nine includes a painting party and a dinner in Bali; Vicki and Brooks attend a therapy session; Tamra takes baby Astro out on the town.