First published in 1910, The Horse of the Invisible tells the tale of Carnacki, a ghost detective investigating the haunting of a country house that threatens the wedding of the Hisgins Family's daughter and her fiance. The source of the apparition must be found before the soon-to-be-wed woman is driven mad, or even to her death. Carnacki does not suspect supernatural forces are at work in this case, but even a ghostbuster can be wrong.

William Hope Hodgson (November 15, 1877 - April 19, 1918) was an English author. He produced a large body of work, consisting of essays, short fiction, and novels, spanning several overlapping genres including horror, fantastic fiction, and science-fiction. He also attracted some notice as a photographer and achieved renown as a bodybuilder. He died in World War I at the age of 40.