Andrea Japp is the pen name of Lionelle Nugon-Baudon, born in Paris, France. She holds a doctorate in biochemistry and is a forensic scientist specializing in toxicology. At the Institut national de la recherché agronomique (INRA), she has led a team of scientists doing research on diet and the environment. In 1990, she began publishing crime fiction (policiers) under her pseudonym, and has written more than 20 novels to date. She branched out into historical crime novels in 2006 with the first of her Lady Agnès de Souarcy mysteries, The Season of the Beast. She also writes screenplays for French television and is the author of numerous collections of short stories. Since 1995, she has translated the novels of Patricia Cornwell featuring Kay Scarpitta into French, using the pen name Hélène Narbonne, as well as Andrea H. Japp. She has also translated works by Simon Brett, Shizuko Netsuke, and Richard Matheson.