Secret Window, Secret Garden is similar to King's earlier novel The Dark Half. Both are about authors, in this case Mort Rainey, who is a thinly-veiled analogue of King himself. Mort is visited by a man who takes the name of John Shooter, with a manuscript which proves to be an almost exact copy of a story that Mort himself wrote and published some years earlier. The man claims that Mort stole it from him and demands that Mort write a story in his name as compensation or prove that he is innocent, or bad things will happen.
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