Katie bemoans the lack of intimacy in her marriage, Jamie objects to Hugo's views on fidelity and Carolyn is frustrated by her inability to get pregnant.

Dave and Katie argue over the need for therapy; Carolyn convinces Palek to keep trying for a baby, although he may be losing interest; Jamie still has trust-issues with Hugo; May reaches out to an old flame.

Carolyn and Palek's families find out about their fertility problems, after Carolyn talks about it at a party; Katie and Dave come up on another wedding anniversary, and Isabella helps picking a present out; Mason tries to help Jamie get over Hugo; May is forced to face her past by Arthur.

Jamie and Dave meet with Dr. Foster. A secret from Carolyn's past haunts Palek.

Dave and Katie talk about the lock. Carolyn Palek want to end therapy. Nick returns to see Jamie.

Palek's anxiety grows. Jamie must come clean with Nick. Katie receives some disturbing news.