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Content Warning: This section of the guide references graphic violence, substance use, sexual content, illness, and death.
In the spring of 2031, 48-year-old Ari Waker is released after an 18-year prison sentence into a fractured United States. She lives in Los Angeles with her roommate, Gloria, a refugee who fled to the newly established Republic of California to escape the violence of the militias in Tennessee. Ari convinces Gloria to attend a party hosted by Gloria’s friend, Kareem Fayed. Gloria initially resists, feeling anxiety around parties after she survived a suicide bombing at a party that left her with a distinctive scar on her forehead. At the party, Ari notices “a pretty woman with soft lips in a silver dress like tinfoil, a thousand tiny pleats” (11). Later, an identical woman named Saraya addresses Ari by her full legal name, Ibari—a name Ari never uses. This version of Saraya seems confused and notes that Gloria “looks like someone” (12). Ari concludes the two women must be twins.
Ari has a brief sexual encounter with Kareem’s roommate, James. Afterward, she talks to Kareem outside. He notices the tattoo on her arm that she got in prison—it says, “true diligence.” She tells Kareem she was sent to prison for paying a contract killer to murder her cousin, Anton. She admits it was a mistake and that Anton is still alive. Inside, Ari finds Gloria in Kareem’s bedroom, taking a painting titled Swan Dive from the wall, claiming Kareem gave it to her. Ari tries to find Kareem to thank him for hosting the party, but he’s nowhere to be found. After the party, Gloria tells Ari she’s pregnant with Kareem’s child. A week later, James, the man Ari had sex with at Kareem’s party, and a man named Bruno visit to report that Kareem is officially missing. When he’s still missing months later, Gloria decides to leave Los Angeles for good.
As time passes, Ari reflects on the recent fracturing of the former United States: “Some cities had declared themselves city-states, while others had been swallowed up by larger new countries. Most territory was contested” (21). Six years later, she lives in the Ohio Republic and works in surveillance for Eduardo Harris, a member of the Cincinnati United Militia. She is assigned to surveil a woman named Nico, Eduardo’s cousin’s wife, whose husband suspects she’s having an affair. Ari recognizes Nico as a doppelgänger of her former roommate Gloria, but without Gloria’s distinctive scar. When Ari confronts her, Nico calls her Ibari and confirms she was at Kareem’s party in Los Angeles and that she knows Gloria. Ari asks if Nico knows someone else who looks like Ari—a double who uses Ari’s given name, Ibari. Nico confirms that she does. She says that in her world, Ari’s doppelgänger, Ibari, is a detective. Nico’s shocked to learn from Ari that Gloria was pregnant with Kareem’s child and that both Gloria and her son now live in Paris.
After her conversation with Nico, Ari calls James and asks if there was anything strange about Kareem’s party that night. James explains his belief that the party was a “door” between realities, allowing two distinct doppelgängers—one of Saraya, one of Gloria—to enter while Kareem exited, disappearing into another universe. He tells Ari, “I think there's another place […] Like maybe a different version of reality, with different versions of us in it" (42). Later, when militia conflicts force Eduardo to flee Ohio, Ari begins working with her neighbor, an arms dealer named Felix Washington. Ari, who often senses when things are going to happen, intuits that a young female customer is casing their motel room, and they flee overnight with the merchandise, eventually making for Phoenix, where they meet Felix’s friends, Drew and Cali. During a weapons run in Houston, another of Ari’s premonitions compels them to abandon their meeting with a client and escape the city amid escalating militia warfare.
As the novel opens, Mandel uses the device of Kareem’s party to introduce the concept of doppelgänger s within the world of the narrative, pointing to the novel’s thematic interest in The Hope of Multiple Possible Futures. At Kareem’s party, Ari sees two versions of the same woman—one of whom addresses her by her legal name, “Ibari” (12), suggesting the existence of another version of Ari. Kareem’s disappearance and his ominous assertion that “there’s something wrong with the party” (14), establishes the central mystery of the narrative.
Throughout the novel, the party serves as a touchstone for the characters as they continue to discover clues about these doppelgänger s and their other world. For example, Mandel connects Ari’s encounter with Nico—a woman nearly identical to Gloria—by having Nico refer to Ari as Ibari, just as one of the Sarayas present at Kareem’s party did. This repetition signals to Ari that her own identity might be fractured across parallel realities. She asks Nico, “You're the second person in my life who's called me Ibari, but I've never used that name. Do I look like . . . is there another Ibari? Someone who looks like me?" (36). The revelation that her alternate self, Ibari, is a detective—an agent of the very systems of order that imprisoned Ari—introduces the idea that in a multiverse, the same person can simultaneously exist as a criminal and a law enforcer, a survivor on the fringes and a pillar of the establishment. This internal fracturing of identity mirrors the external, societal collapse of the United States. Just as the nation has broken into unstable republics and contested territories, characters discover that their own lives are merely one of many possible versions, undermining the concept of a stable, unified self in a world where even reality itself has come undone.
Amid the chaos of collapsing realities and shifting identities, the painting Gloria takes from Kareem’s party symbolizes The Connective Power of Art. Titled Swan Dive, the artwork becomes a physical artifact from the night the multiverse ruptured, a concrete object in a world where people can vanish without a trace. The title itself evokes a leap into the unknown—a fall, a plunge, a transition between states—that mirrors the characters’ experiences. Kareem falls out of his reality, Gloria dives into a new life in Europe with her child, and Ari navigates a post-prison existence that is its own form of reinvention. By connecting the work to the artist L. Alkaitis, the narrative also situates itself within Emily St. John Mandel’s broader literary multiverse, linking the events to characters and histories from her previous novels. In The Glass Hotel (2020), Lucas Alkaitis appears as a struggling painter with an addiction to drugs, whose death shapes the choices of his younger brother, corrupt financier, Jonathan Alkaitis, who’s eventually imprisoned for his financial crimes. Jonathan also appears in Mandel’s novel, Sea of Tranquility (2022), in which he escapes to Dubai to avoid imprisonment, reinforcing the idea of Mandel’s novels as their own multiverse. This intertextuality reinforces the idea of art as a connective force, suggesting that creative works possess a unique ability to transcend boundaries.
Ari’s lifelong premonitions function as a form of non-rational knowledge that prepares her to accept the impossible. From the start, she feels “pulled toward that party by an invisible thread” (6), a sense that her presence is necessary and predetermined. This intuitive certainty proves to be an essential survival tool in the dangerous, post-collapse world. Her instincts warn her that a young woman is casing her and Felix’s motel room, prompting their escape, and later, her overwhelming sense of impending death in Houston saves both their lives. This trait establishes a reality where subjective feeling is as valid and lifesaving as empirical observation. It provides an internal logic that makes James’s theory of a multiverse plausible to Ari. For someone who has always known things without understanding how, the idea of a party acting as a “door” is less a shocking revelation than a new, extreme manifestation of the world’s inherent strangeness. Her premonitions are the bridge between her gritty, pragmatic fight for survival and the story’s larger metaphysical questions, suggesting that intuition is the only reliable guide in a world where the rules of reality no longer apply.
Grounded by its metaphysical premise, the narrative also explores the practical realities of survival in a collapsed America, where surveillance has become a debased tool of power rather than a means of ensuring social order. Ari’s job working for Eduardo, conducting surveillance for the Cincinnati United Militia, lays the groundwork for the novel’s thematic exploration of Surveillance as the Price for Harmony. In this fractured landscape, there is no harmony to preserve; there is only escalating violence between militias, contested territory, and surveillance as a weapon. Ari’s surveillance is mercenary rather than a tool of the state. Mandel juxtaposes Ari’s personal assignments, such as a jealous husband hiring her to spy on his wife, with the constant threat of checkpoints, where armed groups monitor the movements of people from one territory to another. In this new world, Ari’s criminal past and prison sentence, once liabilities, are transformed into assets. Her experience makes her uniquely suited for a society governed by mistrust and violence. Her journey from prisoner to surveillance operative to arms dealer is a process of adapting her morally ambiguous skillset to a new and lawless context.



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