Exit Party: Emily St. John Mandel’s Haunting New Novel
Emily St. John Mandel has a new novel coming this fall.
Exit Party will be published by Knopf on September 15, 2026, and it already looks set to be one of the season’s most talked-about releases.
The novel brings Mandel back to the kind of speculative storytelling she is best known for.
This time, she imagines a divided United States, a mysterious disappearance, and the possibility that another version of the world exists just beyond our own.
What is Exit Party about?
The story takes place in Los Angeles in 2031, after a civil war has broken the United States apart. Peacekeeping troops are leaving the city, the military curfew has been lifted, and people are trying to enjoy their freedom again.
Ari Waker and her roommate attend a party to celebrate. The night soon becomes strange when people who look exactly like other guests begin to appear. Then Kareem, the host of the party, suddenly vanishes.
Ari sets out to find him, but the search grows into a much larger mystery involving parallel realities, surveillance, political control, and competing versions of America.
Penguin Random House says the story will also take readers to Greece, Paris, and a colony on the moon. The hardcover edition is 320 pages, and the e book, audio book, and large-print editions are all due on September 15.
The publisher has not revealed exactly how the different worlds are connected, so some of the novel’s biggest mysteries remain under wraps.
A little about Emily St. John Mandel
Mandel is a Canadian-born novelist known for combining literary fiction with elements of science fiction.
Her best-known novel, Station Eleven, follows a group of people attempting to rebuild their lives after a pandemic. Published in 2014, it became a finalist for the National Book Award, won the Arthur C. Clarke Award, and was later adapted into an HBO limited series.
She went on to write The Glass Hotel and Sea of Tranquility. Both books explore time, memory, coincidence, and the unexpected ways people’s lives connect.
Mandel’s novels often contain big ideas, but they remain focused on ordinary people. She is less interested in explaining how a strange technology works than in showing how it changes the lives of the people around it.
That approach appears to continue in Exit Party.
The return of a familiar character
Longtime Mandel readers may recognize the name Ari Waker. The character previously appeared in The Singer’s Gun, Mandel’s second novel, which was published in 2009.
Readers should not need to revisit that book before starting Exit Party. However, Air’s return adds another connection between Mandel’s novels and gives existing fans an extra reason to be curious.
It also reflects something Mandel has done before. Characters, places, and ideas sometimes move quietly between her books, creating the sense that her stories belong to a larger shared world.
Why this story feels timely
Mandel began working on Exit Party in 2022, according to a profile published by Publishers Weekly on June 12, 2026.
The novel was partly shaped by her concerns about political division in the United States. Instead of writing directly about current politics, she imagines what could happen if that division became even more severe.
The future in Exit Party raises questions that already feel relevant. How much freedom should people give up in exchange for safety? Can a government create peace through constant surveillance? What happens to ordinary life when a country becomes deeply divided?
Mandel explores these subjects through mystery and speculative fiction, rather than presenting readers with a straightforward political argument.
Why the book matters
Mandel has built a wide audience by writing speculative novels that appeal to both literary-fiction and science-fiction readers.
Her books show that stories about parallel worlds, pandemics, and life on the moon can still feel personal. The unusual settings draw readers in, but the characters and their relationships give the stories their emotional weight.
That makes Exit Party a likely choice for book clubs, especially for groups interested in discussing politics, freedom, social collapse, and the role of art during difficult periods.
Early industry responses have also been positive. Penguin Random House lists starred notices from Kirkus Reviews, Book list, and Library Journal. The wider response from readers will become clearer after the book reaches shelves on September 15.
Exit Party appears to bring together many of the ideas Mandel has explored throughout her career. It offers a mystery, an unstable future, and characters trying to understand their place in a world that no longer feels certain.