His intense, atmospheric stories of horror and the supernatural have been read and enjoyed by many modern horror and fantasy writers, influencing directly Peter Straub, Stephen King, Ramsey Campbell, Karl Edward Wagner, "Sarban" (John William Wall), Joanna Russ, Graham Joyce, Simon Clark, Tim Lebbon, and T. E. D. Klein, to name but a few. Klein's novel The Ceremonies was partly based on Machen's "The White People", and Straub's novel Ghost Story was influenced by The Great God Pan.