Dorothy L. Sayers was one of the Queens of Crime. Alongside writers like Agatha Christie, she perfected the whodunnit, but also used the genre to explore social, ethical, and emotional matters. Her characters, particularly Lord Peter Wimsey and his investigative partner Harriet Vane, struggle with the complexities of life and love in a rapidly changing world while solving some of the most intricate and complex mysteries ever offered to the reading public. Sayers was also an important theoretician of detective fiction, a religious dramatist, a public intellectual, and one of the 20th century's most important translators of Dante. While focusing on her mystery fiction, this companion offers a full view of all aspects of Sayers's career. It is an ideal introduction for readers new to Sayers's diverse and rewarding body of work, and an invaluable companion for her many fans.