Knives Out meets Everything Everywhere All at Once in this psychological thriller with a reality-bending twist: every suspect is an alternate version of the same man.

“A hilarious, heartbreaking, and highly entertaining escapade . . . Starting from an ingenious premise, the novel effortlessly carries us to an inevitable (and spectacular) reckoning.”—Daniel H. Wilson, New York Times bestselling author of Robopocalypse and Hole in the Sky

Joshua Hoffman is hosting a fortieth birthday party at his secluded lakeside home, but the guests are no ordinary attendees—they are nine alternate versions of himself from other timelines, all brought together by cutting-edge technology. Each has taken a different path through life. Each has ended up with a very different fate. 

Among them are: The Argentinian, who fled his dreary hometown for a life of luxury in South America; The Townie, who stayed behind to marry his high school crush; The Marksman, a single father struggling to raise his troubled daughter; The Director, a Hollywood filmmaker facing an embarrassing end to his career; and The Teacher, a man of faith and moral duty.

But after a raucous night of one-upmanship, one of the Joshua Hoffmans is found brutally strangled. Now, the others must face a terrifying reality: a killer is among them—and his name is Joshua Hoffman.

As the violence escalates and bodies pile up, the group must uncover the murderer by answering a simple, chilling question: which Joshua Hoffman wants to kill his other selves, and why?