The stars try to get Hollis talking; Gigi questions why she came; Tatum hears from her doctor.

Dru’s cancellation gets real; Tatum and Jack reminisce; Gigi and Brooke connect.

The stars go to the spa for some relaxation and it’s anything but; Dru and Tatum’s history emerges.

Hollis finds out Caroline’s secret and reaches a breaking point; the stars hit the town.

Brooke’s marriage troubles show up on Nantucket; the stars come together and rally around Hollis.

Hollis doubles down on her itinerary; the stars open up to each other; Caroline befriends Gigi.

The stars confront major life decisions; Hollis learns the truth about Matthew.