In this acclaimed work of nonfiction, The New Yorker’s Patrick Radden Keefe expands on his riveting 2024 article about Matthew Brettler, a London teen-ager who plummeted into the Thames after posing as an oligarch’s son. Following the discovery of Brettler’s secret activities, his parents were left to ponder what led him to create a false identity—and whether the police would help solve the puzzle of his death.

Hardcover, published by Penguin Random House. 384 pages.