What was Stephen King’s first novel?

The answer is: Carrie. King came out swinging with an instant classic for his novel debut. Carrie was quickly adapted into a film in 1976, propelling the book to over four million copies sold, and turning Stephen King into the face of modern horror literature.He originally wrote it as a short story to be published in a magazine, but at the urging of his wife continued working to turn it into a novel.Source