"The Black Patch" by Fergus Hume is a mystery novel written in the early 20th century. The story unfolds in a secluded setting, known as The Camp, where Beatrice Hedge, the protagonist, navigates the complexities of her life entangled with the eccentric miserliness of her stepfather, Jarvis Alpenny. As Beatrice grapples with her emotions, romance, and family secrets, the narrative hints at darker elements, including danger and a mysterious presence signified by the ominous "Black Patch." At the start of the book, we are introduced to Beatrice and her stepfather Jarvis Alpenny, who is a usurer living in a derelict garden transformed from old railway carriages. The opening scene presents Beatrice with her friend Dinah discussing their loves and frustrations, capturing the innocence of young women in a stifling environment. As the narrative evolves, a sense of foreboding emerges when another character, Vivian Paslow, interacts with Beatrice, warning her about secrets related to her stepfather and the foreboding "Black Patch." The atmosphere grows electric with the storm that approaches, paralleling the dark turmoil beneath the surface of Beatrice's life, setting the stage for an exploration of love, danger, and mystery intertwined with her destiny. (This is an automatically generated summary.)