Augusta Groner (1850-1929), was a detective's writer who sometimes appeared under the more masculine pseudonym of August or Auguste Groner. Groner's work has been translated and adapted by Grace Isabel Colbron (1869-1948). In this book: The Lamp That Went Out The Case of the Golden Bullet The Case of the Registered Letter The Case of The Pool of Blood in the Pastor's Study The Case of The Pocket Diary Found in the Snow Translated by Grace Isabel Colbron