Tales of Terror and Mystery by Arthur Conan Doyle

The idea that the extraordinary narrative which has been called the Joyce-Armstrong Fragment is an elaborate practical joke evolved by some unknown person, cursed by a perverted and sinister sense of humour, has now been abandoned by all who have examined the matter. The most macabre and imaginative of plotters would hesitate before linking his morbid fancies with the unquestioned and tragic facts which reinforce the statement. Though the assertions contained in it are amazing and even monstrous, it is none the less forcing itself upon the general intelligence that they are true, and that we must readjust our ideas to the new situation. This world of ours appears to be separated by a slight and precarious margin of safety from a most singular and unexpected danger.