The term AGATHA CHRISTIE GENRE refers to the MYSTERY genre, which is a type of fiction that focuses on the solving of a crime or the unraveling of secrets. Agatha Christie is one of the most famous authors of this genre, having written over 80 detective novels and short stories. Her works often feature the iconic characters Hercule Poirot and Miss Marple, who are both amateur detectives. The MYSTERY genre has been popular for centuries, with readers enjoying the suspense and thrill of trying to solve the puzzles before the characters do.