Only Imagine offers a new theory of fictional content. Kathleen Stock argues for a controversial view known as 'extreme intentionalism'; the idea that the content of a particular work of fiction is equivalent to exactly what the author of the work intended the reader to imagine. For its breadth, systematic argument, and deliberate ground-up reconstruction of its concepts of imagination and truth-in-fiction, Stock's book should be read by anyone concerned with what determines the contents of stories.