Noah, a happily married New York City schoolteacher and novelist, and Alison a young waitress recovering from personal tragedy, begin an affair in Montauk, Long Island that has far reaching consequences for both of them.
With a murder unsolved and a betrayal exposed, everyone's truth is suspect. Told from four different points of view, the story cracks wide open to reveal a complex web of intrigue and deceit more dangerous than anyone imagined.
It's 3 years later, and Noah, Alison, Cole, Helen and their families are trying to move on with their lives. But the past keeps coming back to haunt them, and the trauma of what they've been through cannot soon be forgotten.
Noah has moved to Los Angeles to be closer to his younger children Trevor and Stacey, as Helen and Vik have moved there. Cole and Luisa are living together in Montauk, while Alison is working as a grief counselor.
The fifth season and final season will take place in two different time frames: a present-day storyline including Noah, Helen, and their four children and the other decades later featuring a now-adult Joanie Lockhart returning to Montauk to find out…