This edited collection is the first book-length critical study of the Showtime-Sky Atlantic television series Penny Dreadful (2014-2016), which also includes an analysis of Showtime’s 2020 spin-off City of Angels. Chapters examine the status of the series as a work of twenty-first-century cable television, contemporary Gothic-horror, and intermedial adaptation, spanning sources as diverse as eighteenth and nineteenth-century British fiction and poetry, American dime novels, theatrical performance, Hollywood movies, and fan practices. Featuring iconic monsters such as Dr. Frankenstein and his Creature, the “bride” of Frankenstein, Dracula, the werewolf, Dorian Gray, and Dr. Jekyll, Penny Dreadful is a mash-up of familiar texts and new Gothic figures such as spiritualist Vanessa Ives, played by the magnetic Eva Green. As a recent example of adapting multiple sources in different media, Penny Dreadful has as much to say about the Romantic and Victorian eras as it does about our present-day fascination with screen monsters.