A "Mystery Series" is a collection of stories that revolve around solving a crime or uncovering secrets. These series often feature a central character, such as a detective or amateur sleuth, who investigates various cases. The plot typically includes clues, red herrings, and twists that keep readers engaged and guessing until the end. Mystery series can be found in various formats, including books, television shows, and films. Popular examples include the Sherlock Holmes stories by Arthur Conan Doyle and the Agatha Christie novels featuring Hercule Poirot or Miss Marple. These series often explore themes of justice, morality, and human nature.