S. J. Watson is a British author best known for his psychological thrillers that explore memory, identity, and the secrets people keep from one another. Before becoming a full-time writer, he worked for many years in the National Health Service while studying creative writing in his spare time. He is the author of acclaimed novels including Before I Go to Sleep, Second Life, and Final Cut. Renowned for his suspenseful storytelling, unreliable narrators, and intricate twists, Watson has established himself as a distinctive voice in contemporary psychological fiction.