The Idaho Four: An American Tragedy is a compelling true crime book by #1 New York Times bestselling author James Patterson and award-winning investigative journalist Vicky Ward, published by Little, Brown and Company (Hachette Book Group) on July 14, 2025.

Drawing on more than 300 interviews with law enforcement, victims' families, close friends, and community members, Patterson and Ward tell the full story of the murders of four University of Idaho students — Maddie Mogen, Kaylee Goncalves, Xana Kernodle, and Ethan Chapin — and the investigation that led to the arrest of Bryan Kohberger. The book paints a vivid portrait of each victim's life, dreams, and aspirations, while also examining Kohberger's background and the tight-knit college community of Moscow, Idaho that was shattered by the tragedy.

The Idaho Four became an instant #1 New York Times bestseller upon release. It is available in hardcover (ISBN: 9780316572859).