The Dark Half
Stephen King
 Thad Beaumont is an author and recovering alcoholic who lives in the town of Ludlow, Maine. Thad's own books – cerebral literary fiction – are not very successful. However, under the pen name "George Stark", he writes highly successful crime novels about a violent killer named Alexis Machine. When Thad's authorship of Stark's novels becomes public knowledge, Thad and his wife, Elizabeth, decide to stage a mock burial for his alter ego at the local cemetery, which is featured in a People magazine article. Stark's epitaph says it all: "Not A Very Nice Guy". Stark, however, emerges from the mock grave as a physical entity and goes on a killing spree, gruesomely murdering everyone he perceives responsible for his "death" – Thad's editor, agent, and the People interviewer, among others. Thad, meanwhile, is plagued by surreal nightmares. Stark's murders are investigated by Alan Pangborn, the sheriff of the neighboring town of Castle Rock, who finds Thad's voice and fingerprints at the crime scenes. This evidence, and Thad's unwillingness to answer his questions, causes Pangborn to believe that Thad – despite having alibis – is responsible for the murders. Thad eventually discovers that he and Stark share a mental bond, and begins to find notes from Stark written in his own handwriting. The notes tell Thad what activity Stark has been engaging in. Observing his son and daughter, Thad notes that twins share a unique bond. They can feel each other's pain and at times appear to read the other's mind. Using this as a keystone to his own situation, he begins to discover the even deeper meaning behind himself and Stark. Pangborn eventually learns that Thad had a twin. The unborn brother was absorbed into Thad in utero and later removed from his brain when the author was a child. He had suffered from severe headaches and it was originally thought to be a tumor causing them. The neurosurgeon who removed it found the following inside: part of a nostril, some fingernails, some teeth, and a malformed human eye. This leads to questions about the true nature of Stark, whether he is a malevolent spirit with its own existence, or Thad himself, manifesting an alternate personality. Thad eventually vanquishes Stark, but the book ends on an unhappy note with Thad's wife having serious doubts about the future of their relationship: she is appalled that Thad not only created Stark (if unintentionally), but that a part of him liked Stark. Sheriff Alan Pangborn goes on to appear two times more in the Castle Rock series. It is revealed that ever since the events of The Dark Half, he is plagued by nightmares and the memory of Thad Beaumont. We are also told of the subsequent death of Pangborn's wife and son, and his own depression, in Needful Things. In the short story The Sun Dog it had mentioned in passing that Liz left Thad, taking the twins with her. It is then revealed in Bag of Bones that Thad committed suicide. This ties up the novel's ambiguous ending regarding Thad's relationship with Liz. Stark is also mentioned in the "Notes" section of King's collection Nightmares & Dreamscapes under the story "The Fifth Quarter". It states only "Bachman again. Or maybe George Stark."