Noel Carroll is trained as both a philosopher (aesthetics, philosophy of art) and a film scholar. Carroll's book seeks to provide a definition of fictional horror (novels, film, tv shows, etc.) and to explore our emotional and cognitive engagement with horror, or to put it another way, why are we afraid of fictional horror and why do we like it? First, Carroll introduces the term "art-horror" to describe fictional horror and distinguish it from real life horrors. Carroll's definition of "art-horror" is primarily object-based, that a work of art is part of the horror genre if it includes an impure entity which violates cognitive and cultural categories (i.e., a monster) and is threatening. Carroll then explores the "paradox" of the subtitle, which is why are people afraid of fiction? The more general question addressed is how does fiction generate emotions in its audience. This section is the most philosophical as Carroll explores various theories such as the "illusion theory" of fiction and the "pretend theory" of fiction. Carroll also spends considerable time exporing characteristic horror plots and the relation between suspense and horror. The main criticism of the book which many have pointed out is that Carroll's definition of horror is too narrowly circumscribed as it excludes from horror those fictions which present humans as the agents of horror and threat including, for example, a large percentage of the modern horror film (from Psycho to Texas Chainsaw Massacre to Hostel) and also many of the stories by Edgar Allan Poe. This seems wrong both intuitively and categorically. However, I think there are ways to reconcile Carroll's theory with these types of "non-monster" horrors (Carroll even alludes to this possibility himself) and either way Carroll's book is still extremely valuable and useful for anyone studying the horror genre. It is a must read.