Agatha Christie was a novelist that wrote about crime.
Agatha Christie . She was initially an unsuccessful writer , but this all changed for the better when The Mysterious Affair at Styles was published in 1920 featuring Hercule Poirot . Crime fiction is the literary genre that fictionalises crimes , their detection , criminals , and their motives . A novelist is an author or writer of novels , though often novelists also write in other genres of both fiction and non-fiction . The Mysterious Affair at Styles is a detective novel by Agatha Christie . When the woman is killed , Poirot uses his detective skills to solve the mystery .