Innocence Of Father Brown
In 1911, G. K. Chesterton published this first collection of twelve short stories featuring Father Brown, a priest-turned-detective who combines philosophical and spiritual reasoning with scientific observation to solve crimes. In doing so, Chesterton laid the foundation for future fictional detectives, such as Hercule Poirot, Miss Marple, Ellery Queen, and Nero Wolfe.
Unlike other writers of his time, who concocted outlandish crimes and intricate puzzles for the protagonist to solve. Chesterton pioneered the cozy mystery, narrowing the scope of the investigation to limited time, limited space, and a limited number of suspects, with all the clues revealed to the reader as well as to the detective.