"The Dark Half" is a novel by Stephen King that tells the story of a writer named Thad Beaumont, who creates a pseudonym, George Stark, to publish his darker works. When Thad decides to reveal his true identity and retire the pseudonym, he discovers that Stark has come to life in a terrifying way. As Stark begins to commit violent acts, Thad must confront the dark side of his creativity. The novel explores themes of identity, the nature of evil, and the struggles of an artist grappling with their inner demons.