The Affair - Season 5 (2019)

Noah, Margaret and Stacey bond over their mutual distaste for Sasha. Noah attempts to sabotage Helen and Sasha's relationship. Whitney and Colin face the hardships of their relationship. Joanie visits the graveyard.

Sierra struggles to balance motherhood with her burgeoning acting career. Sierra's mother visits uninvited. Helen works her first design gig and begins to focus on herself.

In Montauk for work, Joanie becomes acquainted with EJ. Together, they explore Joanie's family history, leading her to question the cause of her mother's death. Rattled, she starts to make some self-destructive decisions.

Noah and Whitney travel to Montauk to begin planning the wedding. Noah gets a concerning call. Armed with new information about her mother's death, Joanie confronts a stranger.

Allegations against Noah surface and he seeks guidance on how to handle the situation. Helen celebrates a birthday and protects Sierra during an extremely trying time.

As controversy swirls around Noah, Helen and Whitney must decide where their allegiances lie.

As wildfires threaten Los Angeles, Helen and Noah are forced to run for their lives and confront old wounds along the way.

It's Whitney's wedding day and everything comes full circle. Series finale.