This is a book of essays and fiction. It is not the same as the novella Secret Window, which is from the book Four Past Midnight. The novella Secret Window should not be combined with Secret Windows: Essays and Fiction on the Craft of Writing. Nor should the novella be combined with the full book Four Past Midnight, as these are all different works.
Secret Windows: Essays and Fiction on the Craft of Writing is a collection of short stories, essays, speeches, and book excerpts by Stephen King, published in 2000. It was marketed by Book-of-the-Month Club as a companion to King's On Writing.