The Leavenworth Case

The Leavenworth Case is the first novel of Anna Katharine Green, an American poet and novelist, who was one of the first writers of detective fiction in America, and distinguished herself for writing well plotted, accurate legal thrillers.
Green is credited with many firsts. With the character Ebenezer Gryce of the New York Metropolitan Police Force, Green developed the series detective. Amelia Butterworth, a nosy society spinster who assists Gryce in three novels, is the prototype for Miss Marple, Miss Silver and other similar mystery solving female characters. And with Violet Strange, a debutante with a secret life as a sleuth, she invented the ‘girl detective.’
The Leavenworth Case predates the first appearance of Sherlock Holmes by nine years, yet it feels much more modern. Although it bears the romantic sentimentalism of its time, the story possesses a never seen before mastery of detection.

The novel begins when a wealthy retired merchant named Horatio Leavenworth is shot and killed in his library. When investigator Ebenezer Gryce and lawyer Everett Raymond look into the case, it is revealed that no one could have left the Manhattan Mansion before the body was discovered the next day. As the story progresses, Leavenworth's orphaned nieces Mary and Eleanore, Hannah the maid, and a mysterious gentleman who appears on the scene all factor into the investigation