The essays in this volume explore the menacing figure of Slender Man-the blank-faced, long-limbed bogeyman born of a 2009 Photoshop contest who has appeared in countless horror stories circulated on- and offline among children and young people. Slender Man is arguably the best-known example in circulation of "creepypasta," a genre derived from "copypasta," which in turn derived from the phrase "copy/paste." As narrative texts are copied across...