The Real Housewives of Orange County

After a five-year hiatus, Heather Dubrow is back. Gina and Emily pay a visit to Dr. Jen Armstrong for some OC style self-care.

At Heather's fancy sushi party, Gina and Emily investigate a juicy rumor about Shannon and Heather's old friend, Nicole.

Shannon apologizes to the ladies after Heather's party, but finds that some are more receptive than others. Meanwhile, Noella's husband blindsides her with unexpected news.

The ladies gather to celebrate Shane finally passing the California bar. Despite making amends with Gina, Shannon runs into another roadblock with Emily.

Shannon apologizes to Heather, but her atonement doesn't end there. Meanwhile, Dr. Jen's attempt to smooth things over with Noella unexpectedly blows up.

Heather treats Jen and Emily to a spa day where Jen opens up about her marriage.

Heather charters a private jet to Cabo San Lucas for the ladies.

As Cabo heats up and truths are revealed, the ladies struggle to keep their cool.

During the ladies' final night in Cabo, tensions rise and Emily takes a fall.

When Shannon invites the ladies over to her home for a luncheon, Dr. Jen reveals her marriage is struggling and looks to the women for advice.

Emily prepares for Annabelle's baptism, but struggles with her ongoing relationship issues with her father.

While Heather and Gina take a trip to New York, Shannon has Emily, Noella and Jen over for a dinner party.

The ladies' professional lives are booming.

Tensions continue to rise between Gina and Shannon. Heather decides to address her lingering issues with Shannon but is met with fierce opposition.

The ladies head to Aspen for some fresh air and much-needed relaxation. Upon arrival, Noella and Heather go head-to-head over the primary bedroom.

Noella makes strides with her divorce but struggles to control her emotions. Emily and Shannon make peace and band together to give the other ladies a scare.

Noella confronts Heather about rumors she heard at Heather's sushi party. Gina and Shannon try to salvage what's left of their friendship.

The ladies of Orange County reconvene to rehash season 16. A discussion about Heather's return reopens old wounds for Shannon.

The reunion comes to a conclusion with Gina and Shannon's friendship hanging in the balance.