It’s now been over a century since Shirley Jackson was born, and her work continues to reveal new facets and delve into the substance of life and our anxieties–both quotidian and cosmic. In a 2017 essay for Nightmare Magazine, author John Langan makes a convincing case that Jackson’s influence on the horror genre remains underrated–and then examines the myriad ways in which her work echoes through a seemingly-disparate array of books written in the decades following her death.