The Leavenworth Case (1878), also known as A Lawyer's Story, is an American detective story and Anna Katharine Green's debut book.The murder of retired merchant Horatio Leavenworth at his New York house is the subject of this New York City-based story.The well-read book helped shape the detective fiction by introducing the investigator Ebenezer Gryce.The story opens with the murder and shooting of rich retired businessman Horatio Leavenworth in his library.No one could have left the Manhattan Mansion before the corpse was discovered the next day, according to the investigation conducted by Ebenezer Gryce and Everett Raymond.Mary and Eleanore, Leavenworth's orphaned nieces, Hannah the maid, and a strange guy who emerges on the scene all play a role in the inquiry as the narrative goes on.