"The Hemlock Avenue Mystery" by Lily A. Long is a mystery novel written in the early 20th century. The story revolves around the conflict between two prominent lawyers, Arthur Lawrence and Warren Fullerton, culminating in Fullerton's unexpected murder. The main character, young reporter Percy Lyon, finds himself deeply entangled in the investigation, aiming to uncover the truth behind the murder while grappling with the emerging complexities involving Lawrence and a mysterious woman connected to the incident. At the start of the narrative, Lyon witnesses a heated altercation between Lawrence and Fullerton that suggests rising tensions between them. Shortly after, Fullerton is discovered dead, prompting rampant speculation amongst neighbors about the circumstances surrounding his demise. Lyon, who has a hero-worship fascination with Lawrence, is drawn into the intrigue further when he encounters a fleeing woman on the night of the murder. As he delves into the details surrounding Fullerton's death, Lyon must navigate the intertwining motives of the involved parties while grasping at clues that will either point to Lawrence's innocence or complicity in the crime. The opening sets the stage for a web of deceit and miscommunication as Lyon uncovers connections between the individuals involved, laying the groundwork for a gripping exploration of crime and justice. (This is an automatically generated summary.)