Therapist Lily Weber isn't one to wallow in the past, but her formative years left her with a thirst for justice and a flexible code of ethics. Lily spent years reinventing herself, changing her name to leave behind her tumultuous childhood and fractured relationship with her mother. But beneath her carefully curated life lies a simmering obsession: to dismantle Hugh Randall's life by any means necessary. Hugh, the famous film producer who upended her life when she was fifteen, is still powerful, privileged, and untouchable. Or, is he?

When a side gig offers Lily access to Hollywood's power players, she weaves a web of traps and landmines, creating cracks in the foundation of Hugh's life and the company he's spent decades building. But as her methods grow riskier, her plan begins to unravel. With her career and future on the line, Lily must confront how far she's willing to go for justice, and whether she's willing to risk every relationship in her life.

Unraveling alternates between Lily's present-day schemes and the pivotal summer on Nantucket when, as a lonely teen named Morgan, she was first captivated by both Hugh and his charming wife, Elena-- a relationship that left scars she can no longer ignore.