"Jonah's Luck" by Fergus Hume is a novel written in the early 20th century. The story revolves around Angus Herries, a young man who finds himself embroiled in a murder mystery after staying at a bleak inn. As Herries navigates through adverse circumstances, he grapples with a sense of deep misfortune and seeks to clear his name amidst the unfortunate events that unfold. At the start of the narrative, readers are introduced to a despondent Herries trudging through the Essex marshes as the gloomy autumn day sets an ominous tone. Upon arriving at "The Marsh Inn," he encounters an array of characters, including a beleaguered landlady and an old acquaintance, Mr. Gowrie. During his stay, an unexpected turn of events leads to a man being found murdered next door, implicating Herries in the crime due to circumstantial evidence, including a bloodied razor and the key to the deceased's room found in his possession. This opening portion sets the stage for a tale of intrigue, suspicion, and the struggle for Herries to prove his innocence amid a backdrop of personal turmoil and mystery. (This is an automatically generated summary.)