Maria Monk

She gave me another piece of information which excited other feelings in me, scarcely less dreadful. Infants were sometimes born in the convent; but they were always baptized and immediately strangled!

Little by little, not without astonishment, I rediscovered the great names of the eighteenth and nineteenth centuries, who had been the master thinkers of my grandfather and other Mexican liberals. They did no offer me a doctrine or a catechism: they were and they are a source, an inspiration.

Mysteries include so many things: the noir novel, espionage novel, private eye novels, thrillers, police procedurals. But the pure detective story is where there's a detective and a criminal who's committed a murder and leaves clues for the detective and the careful reader to find.