Nobody's Fool is a gripping thriller by #1 New York Times bestselling author Harlan Coben, published by Grand Central Publishing (Hachette Book Group) on March 25, 2025. It is the second book in the Detective Sami Kierce series and runs 352 pages in hardcover.

Twenty-two years ago, Sami Kierce — a young college graduate backpacking in Spain — woke up covered in blood, a knife in his hand, and his girlfriend Anna dead beside him. The case was never fully resolved, and the memory has haunted him ever since. Now a private investigator teaching night-school classes on investigation in New York City, Kierce gets the shock of his life when he spots a familiar face in the back of his classroom: Anna, very much alive. What follows is a relentlessly twisty mystery packed with shocking revelations, complex characters, and the propulsive pacing that has made Coben one of the world's most beloved thriller writers.