The Queen of Crime: Essential Agatha Christie

Agatha Christie is the best-selling fiction writer of all time, with over 2 billion copies sold across 80+ novels. She invented the modern mystery novel and her books still top "best mysteries" lists decades after her death. This challenge covers the essential Agatha Christie reads — the novels that defined the genre, shocked readers with their twists, and launched two of fiction's most iconic detectives: Hercule Poirot and Miss Marple. Whether you're starting with Christie or finally filling the gaps, these are the books that made her a legend.