Cameras pick back up after Ariana discovers that her boyfriend of nine years is having an affair with one of her best friends; Schwartz panics when the scandal threatens to upend their business; Sandoval comes clean with another shocking secret.

When Stassi believes that Kristen committed the ultimate betrayal, she devises a plan to expose her in front of all of her friends. Lisa struggles to keep SUR’s working dynamics under control when tensions between Jax, Tom, Stassi and Kristen reach all-time highs.

Andy Cohen sits down for intimate one-on-one interviews with Ariana, Tom and Raquel to get to the bottom of the cheating scandal; James nearly comes to blows with Sandoval over the affair; Katie and Schwartz rehash the implosion of their divorce.

In the season finale, SUR's sexy annual photo shoot turns tearful as Stassi attacks Jax for his womanizing, and Lisa helps Tom deal with the growing evidence of Kristen’s infidelity. Things come to an explosive head at Scheana’s engagement party when Kristen and Tom finally face off with Stassi and Jax.

Ariana and Katie host a preview party for their sandwich shop; James takes an exciting step forward in his career; Tom and Ariana have a serious talk about the state of their relationship; Raquel confronts Katie for rage-texting Schwartz.

Lisa throws two huge parties for Gay Pride; James flaunts fresh love bites, and everyone wants to know who was responsible; Tom Sandoval and Tom Schwartz kick-start Shay's makeover; Jax seizes an opportunity to move in on Lala.

Lisa and the SUR staff open up about their issues with Stassi; Tom Sandoval and Ariana confront Kristen over Miami Girl; Tom Schwartz responds to Katie's marriage ultimatum; Stassi reveals the real reason she is no longer friends with Scheana.

While Jax struggles to remain loyal, Stassi tells Kristen how to make Jax reveal Tom's alleged cheating; James apologizes to Kristen to salvage their relationship; Lisa teams up with singer Lance Bass to host a puppy adoption event at PUMP.

Lisa treats a group of underprivileged kids to the full SUR experience, including a serving of bad behavior from her staff. Jax stands up for Kristen when her break up with James turns ugly. Ariana's mood sours when Sandoval contemplates going to Vegas without her, Schwartz and Sandoval fail to impress with their business plan, and Jax asks Brittany to move in with him.

When Stassi runs into her old SUR crew at Lala's party, Scheana must finally answer for her part in Stassi's sex tape scandal. Jax brags about his girlfriend's breast enhancement, but his friends are not impressed. Tom Sandoval works on a new single, Kristen continues her serial dating, and Tom Schwartz lands in hot water with Katie when he quits his job for Lisa Vanderpump.

The gang heads to Hawaii to celebrate Jax and Tom's birthdays; Tom learns Scheana sent derogatory text messages about him to Ariana's mother; Katie lashes out when Lala swims naked in front of Schwartz.

Lisa Vanderpump hosts Katie and Tom's engagement party; Stassi and Kristen stir up trouble; Jax must atone for his sins during a reunion with Stassi; Tom Sandoval performs his new song at SUR; Lala gets close to Kristen and James.

In the eighth season finale, Lisa Vanderpump throws a party to celebrate TomTom's one-year anniversary, but relationships are tested when Kristen confronts Katie and Stassi for abandoning her, and Jax and Sandoval face off.

Vicious behavior abounds when the ladies from "The Real Housewives of Beverly Hills" arrive for a dinner party at SUR. Meanwhile, Kristen's preoccupation with rumors about Tom leads to a five-woman shouting showdown.

When Stassi refuses to forgive Katie for attending Scheana’s bachelorette party, Katie must either fight for her friendship or cut Stassi out of her life. Peter mistakes Vail’s flirting for interest and asks her on a date that quickly turns awkward. Kristen connects with the girl Tom Sandoval allegedly cheated with in hopes of finally breaking up his relationship with Ariana.

Lisa confronts Kristen about her disrespect for management and arrives at a final decision in regards to her future at SUR; Tom Schwartz makes a shocking revelation to Katie; Scheana debates whether to rescind Kristen's wedding invitation.

Lisa advises the women to get back at their boyfriends for going to Las Vegas, so Lala, Katie and Ariana kiss and make up at Scheana's sleepover; Jax, Schwartz and Sandoval strive to remain loyal to their girlfriends while in Sin City.

Tom Schwartz finally mans up and plans to get down on one knee for Katie, but Lisa Vanderpump worries that his complicated proposal scheme will end in disaster. Brittany moving in with Jax doesn't stop him from moving in on Lala. Ariana's attitude drives Scheana and Katie closer to Kristen, Sandoval tries to correct a huge mistake, and Kristen and James get left out in the cold when the SUR crew plans a tropical vacation.

Lisa Vanderpump holds Stassi at arm's length; Scheana and Ariana realize their friendship is damaged; James schemes to get an invitation to Hawaii with the others; Katie shows off her engagement ring at SUR; Faith and Lala go skinny-dipping.

When Stassi visits Kristen, she reveals the truth about her sex tape; Arian refuses to accept Scheana's apologies; Lala kicks James out of bed; Jax winds up in jail.

After Katie reveals the rumor that Kristen slept with Jax, Stassi hatches an elaborate plan to trick them into confessing. Lisa hires a "secret diner" to evaluate the service at SUR, but the staff is more focused on rumors than customers.

The SUR crew members put aside their differences to celebrate at Scheana's bachelorette party in Miami; Tom Sandoval accuses Jax of being a womanizer; when a PUMP manager quits, Lisa calls on her daughter, Pandora, to step in.

The SUR crew comes together to celebrate Scheana's wedding day, but Scheana experiences a meltdown as the day of her dreams turns into a nightmare; James confronts Kristen over her continued obsession with Tom Sandoval.

Scheana breaks down when her plan for a perfect wedding falls apart. Kristen lives up to everyone’s worst expectations when she fights with James at the reception. Tom Schwartz makes a bad situation worse when his apology gift to Katie leads to tears.

Sandoval and Schwartz learn that not all that happens in Vegas stays in Vegas when they surprise their girlfriends with shocking news; Kristen returns to SUR, but Ariana is not ready to forgive; Tom Sandoval and Ariana take the stage at the Improv.