The Three Impostors (Unabridged‪)‬

The Three Impostors (1895) by Arthur Machen is a combination of horror story and mystery novel. It features the likable detective, Dyson, who is somewhat pretentious and mostly ineffectual. The work is separated into a number of episodes, from "The Adventure of the Gold Tiberius" to "The Adventure of the Deserted Residence".