Schwartz makes a startling revelation to Lala about a past hookup that sends Katie spiraling. James hosts a DJ night at Hotel Ziggy, but when Schwartz brings non-girlfriend Jo, the other girls give her the cold shoulder. Ariana and Katie encounter new issues in opening their sandwich shop. Brock drops a bombshell about a more recent liaison that shocks the entire group.

Katie and Lala hash out their issues after a blowout argument; Sandoval throws himself back into the dating pool; Ariana warns Scheana about the consequences of rekindling a friendship with Sandoval.

The group begins to mend their friendships; Lala expresses her desire to become a mother again; Scheana cries to Lisa about her insecurities with Ariana; Sandoval is forced to recognize he may never get closure with the woman he loves.

Sandoval attempts to reconnect with Scheana during a meditation exercise; Brock accuses a friend of spreading a rumor about his marriage; James and Ally announce their new family member to the world; Ariana and Katie embrace their inner bosses.

James surprises Ally with a new addition to the family; Scheana and Brock clash over hiring a nanny for Summer Moon; a tense conversation between James and Sandoval threatens to rock the fragile peace the group had just formed.

James and Ally throw their first pool party in their new house, and the invite list includes everyone but Tom Sandoval. Lisa Vanderpump gives Scheana and Lala advice on how to handle a broken friendship. Schwartz gets a haircut from his not-girlfriend, Jo. A face from the past makes an unexpected return, promising to throw a wrench into the group dynamic.

Schwartz hatches a half-baked scheme to bring the gang back together, but Ariana sets firm boundaries with everyone regarding her ex-boyfriend's place in the group. Katie and Scheana make a promise to prioritize their friendship. A shocking admission shakes Lisa Vanderpump to the core. When Tom Sandoval dares to show up at See You Next Tuesday, he and Scheana square off about who's to blame for their current rift.

Tom Sandoval returns to Los Angeles just in time for his birthday. His plans hit a snag, however, when Ariana learns he wants to throw a party in their shared home. Scheana attempts to reinvigorate her music career, but must first work through her anxiety about leaving Summer Moon with a nanny. Schwartz confronts Sandoval for abandoning him to deal with their business alone. James decides to face his former friend and things quickly go south when Sandoval brings up a painful memory from the past.

In the season 11 premiere, Ariana puts on a brave face and attempts to rebuild her life after Tom's infidelity, despite sharing a house with her ex-boyfriend. Tom Schwartz tries to make peace with his friends, but discovers he's still excommunicated from the group. James settles into his new life of domestic bliss with Ally. Scheana opens up about her postpartum OCD diagnosis. Lala confides in Lisa Vanderpump about her regrettable treatment of a one-time nemesis, making a grand gesture that threatens to rock the boat with her friends.

A look back at the juiciest secrets and lies leading to current events, with a sneak peek at the season ahead.