When first published in 1894, Arthur Machen's novella The Great God Pan was scorned by the critics, who inveighed against its decadent sexual content. But there is much more to this tale: a timeless warning that scientific experimentation in forbidden realms can lead to terrible unforeseen consequences. Machen's The Terror is another masterful mix of horror and murder, set in England during the carnage of the First World War. Humanity's abandonment of morality in search of total victory results in a series of mysterious killings by unlikely avengers. In The Angels of Mons Machen gives a stirring account of the ghostly bowmen of Agincourt coming to the aid of hard-pressed British infantry during the Great War. The tale resonated so well with the deepest desires of Britain's wartime population that, decades later, many still believed it to be an actual event.