Agatha Christie had quite a formula. She didn’t discover it. Others employed similar elements before her, and many more have practiced it since. But Christie perfected it with her cozy who-done-its featuring Hercule Poirot.
Christie’s mysteries generally begin by introducing a cast of eccentric characters, progress quickly to an inciting incident (usually a murder), and kick into gear with the arrival of a master investigator who … [read more at The 21st-Century Scop].