This paper defends a theory of fictional truth. According to this theory,
there is a fact of the matter concerning the number of hairs on Sherlock
Holmes’s head, and likewise for any other meaningful question one could
ask about what’s true in a work of fiction. We argue that a theory of
this form is needed to account for the patterns in our judgments about
attitude reports that embed fictional claims. We contrast our view with
one of the dominant approaches to fictional truth, which originates with
David Lewis. Along the way we explore the relationship between fiction,
counterfactuals, and vagueness.