Anna Katharine Green was the most famous and prolific writer of detective fiction in the United States prior to Dashiell Hammett.
Her amateur spinster sleuth, Amelia Butterworth, became the prototype for nume.
She created the first female detectives in American fiction.
Green is credited with a number of "firsts" within the mystery genre, including the gentleman murdered as he makes out his will and the icicle as murder weapon.
Her first novel, The Leavenworth Case, was the bestseller of 1878.
Anna Katharine Green was the most famous and prolific writer of detective fiction in the United States prior to Dashiell Hammett