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'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 turns to Alison to help him research the local culture for his novel.

A chance encounter with Alison leads to an uncomfortable truth.

Janelle struggles with her relationship and work, so turns to Carl for support. Production for Descent commences, and Sasha takes an interest in Helen. Helen takes her first steps towards acceptance.

Sasha proposes adjustments to Noah’s script. Sasha’s relationship with Helen blossoms, and Noah takes notice. Bruce’s condition worsens. Joanie’s business trip leads to violent encounters.

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.

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.

Noah and Alison are forced to consider an inevitability.

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.

Noah discovers there's more to Alison than he's been led to believe.

Noah escapes the city with his family to a Long Island estate. Alison and her husband struggle to move past a tragedy. Noah and Alison meet in a chance encounter.

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.

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

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.

Noah embarks on his journey with the Descent movie by getting acquainted with his star, Sasha Mann. Helen mourns a tragic event. Sierra welcomes a new arrival. Joanie struggles with an upcoming birthday.

Alison and Noah are forced to confront new obstacles at home.

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.

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 and Alison grow closer on a day trip to remote Block Island.

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.

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.

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.

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.

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.