In Reading Phinehas, Watching Slashers, Brandon R. Grafius enlists horror theory, especially analysis of the slasher film genre, to elucidate the account in Numbers 25 featuring Phinehas jointly spearing a Midianite woman and an Israelite man who seem to be engaged in sexual intercourse. Grafius contends this “rhetorical violence” is part of a priestly attempt to reinforce social boundaries within the ancient Israelite community (xiii). He explores this concept throughout five chapters of the monograph, followed by a brief conclusion.Overall, Grafius’ work is a success. It is well written and logically organized. It features a broad analytical approach, granting a satisfying balance between assessments of ancient texts and modern interpretive models. It is concise and yet it sufficiently highlights most of the relevant research on Numbers 25, horror theory, and slasher film analysis. Moreover, the connections between horror theory and religion are numerous and underexplored. As such, this book is a welcome attempt to bridge that gap.