When The Leavenworth Case, Anna Katharine Green's first novel, was published in 1878, it quickly became a bestseller as well as a seminal work of detective fiction. Critics were to perceive Green's work as the link to Edgar Allan Poe in the American line of classic detective fiction. But the development of serial detectives is perhaps her greatest achievement. (Ebenezer Gryce of the New York Metropolitan Police, who makes his first appearance...