Mary Rinehart 
Mary Rinehart: 22 mystery novels 

This file includes the following classic mysteries: The Man in Lower Ten (1906), The Circular Staircase (1908), When a Man Marries (1910), Where There’s a Will (1912), The Case of Jennie Brice (1913), The Street of Seven Stars (1914), The After House (1914), K (1915), Long Live the King (1917), The Amazing Interlude (1918), Dangerous Days (1919), Love Stories (1919), A Poor Wise Man (1920), The Bat (1920), The Confession (1921), Sight Unseen (1921), The Breaking Point (1922). According to Wikipedia: ‘Mary Roberts Rinehart (August 12, 1876-September 22, 1958) was a prolific author often called the American Agatha Christie. She is considered the source of the phrase ‘The butler did it’, although she did not actually use the phrase herself, and also considered to have invented the ‘Had-I-But-Known’ school of mystery writing… Rinehart wrote hundreds of short stories, poems, travelogues and special articles. Many of her books and plays were adapted for movies…’