54 pages • 1-hour read
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Content Warning: This section of the guide includes discussion of illness, death, child death, death by suicide, substance use, sexual content, and emotional abuse.
Eleanor returns to her Nantucket home with her sister, Flossie, and housekeeper, Felipa. Upon arriving, Eleanor is unsettled to see a navy-blue Bronco she recognizes as Harper’s parked outside. Confused, Eleanor sends Flossie to the carriage house to find Tabitha, but it’s empty. After another call to Tabitha goes unanswered, Eleanor retires.
The next morning, Harper appears in Eleanor’s bedroom. She tearfully explains that she and Tabitha have switched islands and that Tabitha blames Harper for ruining her new relationship. Eleanor calls Tabitha and leaves a stern message demanding she return to Nantucket at once.
Reed has been living in isolation at a borrowed cottage after Sadie exposed his affair with Harper. After he told Sadie he wanted to have children, Sadie became distant, and they stopped having sex. In his rental cottage, Reed’s only connection to the outside world is a newspaper, where he reads that Harper’s friend Brendan has died. Reed intuits that this news will bring Harper back to the island. That evening, a woman whom he believes to be Harper arrives at his cottage. Overjoyed, he greets her with a passionate kiss and professes his love.
At Reed’s cottage, Tabitha poses as Harper. Although she kisses Reed, her thoughts are with Franklin. She contemplates sleeping with Reed as revenge against Harper, but can’t go through with it, realizing the act would be a betrayal of herself. When Reed asks if she’s truly Harper, Tabitha confesses her real identity.
The day after Harper’s arrival on Nantucket, Eleanor summons her for a family “intervention.” Once Harper and a reluctant Tabitha are present, Eleanor confesses she believes she caused the premature birth of Julian by overworking Tabitha during the pregnancy. She also admits she maintained a secret sexual relationship with Billy after the divorce. Tabitha confesses that she and Harper used rock, paper, scissors to decide who would live with their father. Eleanor urges the sisters to reconcile, and they do so with an emotional hug. As the girls embrace, Harper announces she’s pregnant.
The following day, Tabitha and Harper agree that Harper should move back to Martha’s Vineyard. Tabitha decides to accompany her to finalize the renovation and find Franklin to say goodbye. During the ferry ride, Tabitha confesses to Harper that she visited Reed’s cottage intending to seduce him and gives Harper his address. When they arrive at Billy’s house, a member of the renovation crew informs Tabitha that Franklin had come by looking for her earlier. Seeing her car was gone, Franklin assumed she had already left the island.
On Nantucket, Harper says her last goodbyes to Caylee, Ramsay, and Ainsley. When she reaches Martha’s Vineyard, she goes to Reed’s cottage but finds it empty; a neighbor tells her Reed left on the ferry earlier. Back at Billy’s house, Harper and Tabitha decide to scatter their father’s ashes. With help from a friend, they scatter some ashes at a golf club and the rest at the Oak Bluffs harbor. Both sisters independently decide that if Harper’s baby is a boy, they will name him William. Harper marvels that Tabitha can still read her mind after all this time. They embrace, their connection fully restored.
Sadie visits the local farmer’s market, where she runs into Tad, her long-time crush. Feeling a sense of peace, Sadie texts her brother, Franklin, giving him her blessing to pursue a relationship with Tabitha. On the inter-island ferry to Nantucket, Reed sees Franklin playing his guitar. Feeling paranoid, Reed suspects Franklin is following him. Reed is traveling to find Harper, while Franklin is on the same ferry, hoping to find Tabitha.
That evening, Franklin arrives at Eleanor’s house, asking for Tabitha. Eleanor graciously invites him to wait. Moments later, Reed also arrives, looking for Harper. Before anyone can react, Flossie blurts out that Harper is pregnant, which shocks Reed. Maintaining her composure, Eleanor calmly invites Reed to sit down for a drink. She sits back and observes the two different men who have arrived for her two daughters.
Months later, in the fall, the narrative shifts to the perspective of Harper’s dog, Fish. Harper and Fish have moved into Brendan’s cottage on Chappaquiddick with Reed. For Harper’s 40th birthday, her friends visit and celebrate. Later, Harper takes Fish to Cape Poge, the point of the island closest to Nantucket. She explains to the dog that she plans to shout a birthday wish across the water to Tabitha, where Tabitha is waiting on the other shore to shout a birthday wish to her. Using her father’s watch for timing, Harper shouts her wish at exactly 3:12 pm. A moment later, Fish’s ears pick up the sound of a faint voice calling a wish back across the sound.
In the novel’s final section, Tabitha’s attempt to seduce Reed by impersonating Harper escalates the recurring motif of mistaken identity from a catalyst for social embarrassment into a tool of psychological warfare. Whereas Sadie’s public slap was an act of passive misidentification inflicted upon Tabitha, this planned seduction is an active appropriation of Harper’s identity for retribution. Structurally, Tabitha’s act of vengeance triggers the full reveal of Julian’s death, a narrative choice that positions the past as a dynamic force continually reshaped by current pain. As Tabitha prepares to drive to Reed’s cottage, “She swigs from the bottle of wine. And that, as it turns out, is the swallow that unlocks the vault in her mind” (345).
Tabitha’s plan unravels not because Reed discovers the deception, but because Tabitha confronts the limits of her own identity, experiencing a moment of transformative self-awareness. While she can physically replicate her sister, she cannot replicate her sister’s emotional reality. As she attempts to seduce Reed, her thoughts remain fixed on Franklin, and she understands that “the person she is ultimately betraying is herself” (379). This internal recognition signals a crucial shift in her character arc. The failure of her revenge plot forces her to acknowledge the futility of blaming Harper for her own unhappiness. This scene deconstructs the motif, transforming it from a plot device that highlights the twins’ interchangeability into a recognition of their individuality, setting Tabitha on a path toward healing.
Hilderbrand resolves the central conflict through the formal device of a family intervention orchestrated by Eleanor in Chapter 34, which serves as the story’s structural climax, shifting the locus of blame from the sisters’ feud to the foundational trauma of their parents’ choices. Eleanor’s confession—that she believes her demands on a pregnant Tabitha caused Julian’s premature birth—provides a key moment of reframing. It dismantles the sisters’ history of resentment, which was built on the premise of Harper’s culpability for Julian’s death. By accepting responsibility, Eleanor redefines the family tragedy. Her admission forces the twins to confront the arbitrary nature of their separation, crystallized in the revelation of the rock, paper, scissors game. This symbol of chance underscores the life-altering consequences of a seemingly trivial childhood act. Eleanor’s desire for her daughters to “hate [their] parents but love each other” (387) articulates the formative power of sibling bonds and The Role of Empathy in Reconciliation. The family’s healing requires re-evaluating their shared past to identify the true source of pain.
Ritual and place become central to cementing the sisters’ reconciliation, particularly through the scattering of Billy’s ashes. This act provides a necessary, shared ceremony of grieving that was absent from the chaotic memorial. The chosen locations—a golf club and the Oak Bluffs harbor—are significant, tethering their farewell to The Power of Place in Shaping Identity. These quintessentially Vineyard settings, spaces associated with Billy and Harper’s shared life, allow Tabitha to participate in a history from which she was excluded. By performing this final duty together, they symbolically reunite the two halves of their father’s legacy. Witnessing Drew with a new partner offers Harper a public, visual confirmation that the island community has moved on from the scandal of her affair, a nod to The Struggle to Escape the Past in a Small-Town Community. This scene provides a quiet form of absolution, freeing her from the social shame that had previously defined her existence on the island.
The narrative extends the theme of reconciliation beyond the central family unit, creating parallel arcs of forgiveness that underscore the interconnectedness of the island community. Sadie’s conversation with Tad prompts a shift in perspective. It forces Sadie to confront her own bitterness and its destructive impact on her brother. Her subsequent text message, giving Franklin her “blessing” to pursue Tabitha, is an act of grace that breaks the cycle of blame and frees Franklin from the specter of his sister’s hurt and resentment. Structurally, the simultaneous ferry journeys of Reed and Franklin to Nantucket create a sense of narrative convergence. The two men travel in parallel, their paths destined to intersect at the Frost home. This deliberate construction emphasizes the novel’s resolution as a collective healing, where individual acts of forgiveness are as essential as the reconciliation of the protagonists.
The novel’s epilogue, narrated from the perspective of Harper’s dog, Fish, reflects an authorial choice that synthesizes the story’s thematic resolutions through a non-human lens. By filtering the conclusion through Fish’s consciousness, the narrative strips away the complexities of human memory and resentment, presenting the restored family order in its most elemental form. Fish perceives the world through scent and routine. Harper’s pregnancy is a change in her shape and scent; Reed’s commitment is his consistent presence. Fish’s perspective reinforces the family’s return to a natural, harmonious state. The final scene, in which the sisters shout birthday wishes across the water, provides the narrative with a closing symbol. It affirms the twins’ renewed bond while honoring the separate identities shaped by their respective islands. They are connected and synchronized, yet distinct and individual. Fish’s ability to hear Tabitha’s faint reply across the sound provides an objective confirmation of this connection, ending the novel on a note of restored familial unity.



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