The order of Louise Penny's first five books are "Still Life," "A Fatal Grace," "The Cruelest Month," "A Rule Against Murder" and "The Brutal Telling." According to Penny's official website, she has published 13 books as of 2015. Her novels have been published in over 20 languages.
Louise Penny's novels are all part of the same mystery series. They are crime novels heavily influenced by the British "whodunit" genre, in which the protagonist tries to solve a crime using various clues, and the perpetrator is not revealed until the end of the book. Penny's novels center around a character named Chief Inspector Armand Gamache, who is the head of the homicide department in Three Pines, a Canadian town located in the province of Quebec.
Louise Penny published her first novel in this series, "Still Life," in 2005. She published her second novel, "A Fatal Grace," in 2007. An alternate title for this book is "Dead Cold." Penny published her third novel, "The Cruelest Month," in 2008.
Penny published her fourth book, "A Rule Against Murder," (alternately titled "The Murder Stone") in 2009. The year also saw the publication of her fifth book, "The Brutal Telling." Between 2009 and 2015, Penny published four more novels in her mystery series.