Marin is a successful salon owner and devoted mother whose stable life fractures when her four-year-old son goes missing. Plagued by immense guilt and grief over the past sixteen months, she attends a support group and therapy while harboring private fears that healing means giving up on her child. When a private investigator uncovers new secrets about her marriage, Marin's despair quickly transforms into an obsessive, vengeful rage.

Derek is a wealthy businessman who grew up in poverty and prides himself on his self-made financial stability. In the sixteen months since his son's disappearance, he has become emotionally withdrawn and detached from his marriage. Unable to process his profound grief and guilt directly, he seeks an escape through a clandestine affair.

McKenzie is a twenty-four-year-old art student and barista trying to maintain financial stability in Seattle. Dealing with childhood trauma and abandonment issues following her parents' divorce and her father's death, she frequently pursues relationships with older, married men. Though she intends to keep these arrangements purely transactional, she struggles with chronic loneliness and a desperate need for validation.

Sal is the owner and operator of Sal's Bar and Marin's longtime best friend. The two dated briefly in college, but despite their breakup, he has remained a steadfast and supportive presence in her life. Sal carries complex emotional baggage from his youth and harbors lingering romantic feelings for Marin.

Sebastian is Marin and Derek's four-year-old son. His sudden disappearance sets off the central tragedy of the narrative, completely shattering his parents' lives. The unresolved nature of his case haunts his family every day.

Vanessa is the private investigator Marin hires when the authorities fail to locate Sebastian. Diligent and resourceful, she continues to look into the lives of Derek and Marin's associates, ultimately uncovering secrets that derail Marin's understanding of her marriage.

Julian is a dangerous, shadowy fixer connected to Sal. He operates outside the bounds of the law, willing to execute lethal jobs for exorbitant fees, provided the money is wired to his cover charity accounts.

Frances is a grieving mother whose son, Thomas, went missing. She provides a meeting space at her donut shop for others enduring similar tragedies, though she privately grapples with devastating nightmares.

Lorna is Sal's mother, a resilient woman who endured a difficult marriage to her abusive late husband. She shares a warm, trusting bond with Marin and often offers her hard-earned wisdom on forgiveness and human flaws.

Dr. Chen is Marin's therapist, working to help her navigate the intense psychological fallout of her son's disappearance. She encourages her patient to process her darker emotions rather than acting on vengeful impulses.

Lila is a member of the support group who is struggling with her child's disappearance. Her grief often manifests as outward anger, particularly toward her husband, whom she suspects of having an affair.

Simon is a parent in the support group who also lost a child. He acts as a conduit for difficult news within their small community, reaching out to others when tragic updates occur.

Sadie is the manager of Marin's renowned downtown salon. She steps up to keep the business running smoothly while her employer struggles with profound personal tragedies.

Sal's late father was a winemaker from Italy with an abusive streak. His death during a fiftieth birthday party remains a dark, defining incident in his family's history.

Izzy is a former friend who originally introduced McKenzie to the lifestyle of dating wealthy, married men. She eventually abandoned the scheme for a healthier relationship and cut ties completely.

Paul is a married man McKenzie previously dated. Their transactional relationship ended chaotically when his wife discovered the affair, resulting in extortion attempts.

Tyler is McKenzie's roommate. He strongly disapproves of her relationship with Derek and frequently expresses frustration when she prioritizes her affair over their friendship.

Thomas is Frances's son, whose tragic disappearance mirrors Sebastian's case and heavily impacts the psychological state of the parents in the local support group.

Jamie is a new member of the local support group. Her recent arrival provides a fresh perspective on the overwhelming, long-term grief shared by the existing attendees.