The reason Machen remains influential among modern horror writers is quite evident in his most famous tale, The Great God Pan. While not the as shocking and decadent as his contemporary critics said it was, it is still quite disturbing as Machen tells this story about evil seductions and hidden deities. Machen seems to have a strong interest in the mystical (he hung around with Alister Crowley) and strong pantheistic leanings. Yet while contemporary Algernon Blackwood wrote about the same areas with a feeling of eerie awe, Machen fills it with foreboding and sexual tension. A must read for horror aficionados.