Lewis Carroll’s Alice stories have inspired numerous adaptations through the looking glass, but darker transformations utilizing the conventions of horror have become more prolific in the last two decades. This chapter explores three twenty-first-century screen texts through their allusions to Carroll’s Alice in Wonderland—Pan’s Labyrinth (2006), The Hunger Games (2012) and the Netflix Original series, Stranger Things (2016–)—to consider the increasingly fluid intersections between horror and children’s popular culture in works that attract both young and adult audiences. Following a reassessment of the generic complexities of Carroll’s Wonderland, the chapter examines how each appropriation mobilizes the text’s thematic interest in permeable boundaries and transformative spaces, reconfiguring Carroll’s dreamchild to interrogate social and cultural hierarchies through horror’s subversive power.