"The Hole in the Wall" by Arthur Morrison is a gripping mystery novel that delves into the gritty underbelly of Victorian London. As a genre, it falls within the realm of historical crime fiction, offering readers a compelling blend of suspense, intrigue, and social commentary. Set against the backdrop of the East End, Morrison's narrative follows the investigation of Detective Sergeant George Gribble as he unravels the secrets surrounding a notorious criminal haunt known as "The Hole in the Wall." With meticulous attention to detail, Morrison paints a vivid picture of the bustling streets, squalid alleys, and shadowy characters that populate this atmospheric setting. As Gribble delves deeper into the mystery, he uncovers a web of deception, betrayal, and violence that threatens to consume him. Along the way, Morrison provides keen insights into the social disparities and moral complexities of Victorian society, shining a light on issues of poverty, crime, and justice. With its richly drawn characters, evocative setting, and twist-filled plot, "The Hole in the Wall" stands as a testament to Morrison's talent for crafting immersive and suspenseful narratives. It is a must-read for fans of historical crime fiction and anyone intrigued by the darker side of London's past.