Noah and Helen attempting to conduct amicable divorce proceedings, but complications bring about inescapable conflict. Meanwhile, surprising developments in Helen's life lead to unexpected emotions.

Alison's summer with Noah is interrupted by an unwelcome guest. Meanwhile, Cole's self-destructive lifestyle causes everyone to become concerned.

Noah's undying love for Alison leads to serious consequences. Meanwhile, Alison discovers a surprising truth about how to sustain a marriage.

Helen makes an innocent mistake that leads to outrageous consequences. Meanwhile, a court order leads to a dire setback for Noah and Alison.

Alison is thrown by a shift in behavior from her hosts, and furious with Noah after a chance discovery. Meanwhile, Cole rejects Scotty's plan to make money - but not before Scotty catches him in a situation best kept secret.

A medical emergency casts Helen and Noah's litigation process in a new light, causing Helen to make a long overdue decision. The dynamic of Noah and Alison's relationship shifts as troublesome discoveries are made.

Alison's mother raises concerns about her and Noah's new lifestyle. Alison confronts Noah about his book. Meanwhile, Cole lashes out at Luisa and is further alienated from his family in the wake of startling revelations.

Helen is bewildered by Whitney's plans. Noah's fame escalates temptation.

Alison weathers a journey alone. Noah faces a terrible reckoning.

Noah grapples with questions. Alison considers a harrowing possibility.

A series of revelations rattle Noah. Alison makes a momentous decision.

Events set in motion long ago come to their conclusion.

Haunted by recent hardship, Noah struggles to navigate the challenges of his old life while attempting to adapt to a new one. A new love interest isn't enough to overcome a sense of dread. Someone is watching him. Season premiere.

One year earlier: after a stern request from Noah leaves Helen devastated, various pressures cause Helen and Vik to reexamine their relationship. Alison returns to Montauk after a crisis only to have her worst fears realized.

Running from secrets she left behind in Paris, Juliette finds Noah an alluring prospect. But a terrifying event shatters all hope of an easy affair. Meanwhile, Noah must fight like never before to make sense of what just occurred.

Cole is put in an increasingly impossible situation by Alison's return to his life. Alison must contend with Luisa while attempting to reconnect with her daughter. Simultaneously, a dangerous passion threatens to wreck everything.

Alison is motivated to spend a memorable day with Noah on Block Island for an unusual reason. Noah is left wistful by their profound connection, until the problems from which he was escaping return with a shocking force.

An unexplained absence sends Helen on a journey of increasingly troublesome discoveries. Compelled to return to a place he's spent his life trying to escape, Noah attempts to repair his relationship with Martin.

Helen gives Noah the help he needs - but at what cost? At his absolute weakest, Noah's world has never seemed more hostile or bewildering. A vital moment of release turns suddenly into something that can't be undone.

An unexpected cause to celebrate provokes a sobering realization in Alison. Soon after, a startling warning leaves her pondering the unthinkable. Cole's frustrations with Alison come to a head, revealing a radical truth.

Helen's escape to Montauk exacerbates her guilt and hastens an identity crisis: should the truth finally come out? Noah's world collapses, leaving him to process something horrific.

Noah's visit to Paris provides Juliette with a distraction from unpleasant realities at home. A chance encounter offers Noah the possibility of healing a relationship in desperate need of repair.

Noah struggles to adjust to his new life after moving to Los Angeles to be closer to his kids. He attempts to reach a gifted but troubled student while under the stern eye of the school's principal. Helen finally discovers the source of her anxiety, only to be blindsided by a new catastrophe. Season premiere.

Cole tries to keep Alison’s behavior from ruining an important deal while Luisa’s legal status threatens their future. An encounter with a local surfer leads Cole to question if he’s the same person he used to be. Alison is saved by a handsome stranger.

Noah’s attempt to teach his students a lesson in civil duty spirals out of control. Helen can’t handle Vik’s decision and goes behind his back, only to find resistance everywhere she turns.

Alison and Ben dig into her past and begin confronting her fears. Cole’s relationship with Alison is jeopardizing his marriage to Luisa.

Vik decides it’s time he started living for himself. But is he ready to face the consequences? Cole meets Nan, an old friend of his father’s, who sends him on a journey to exorcise the ghosts of his past.

Noah supports Anton in a decision about his future which puts Janelle in a complicated spot with her ex-husband. Alison makes a surprising discovery about her father, and another about Ben that eventually leads her back to Noah.

Helen goes to Joshua Tree in search of meaning. Noah and Anton begin an adventure with high hopes until an ominous phone call alters their course.

A hopeful epiphany leads Cole on a journey to a horrific discovery. Noah questions his role in tragic events.

Ben finally confesses the truth to Alison. But is it too late for their relationship?

Noah and Anton visit Yale where Noah encounters an old friend. An immensely difficult day forces Cole and Luisa to reexamine their relationship. Helen gets a new perspective on life.