Lord Peter Books
Sayers is one of the greatest mystery writers of the 20th century, and many of her mysteries center around Lord Peter Wimsey--the aristocratic detective who loves expensive clothes, fine wine, and British wit. There are 11 novels featuring Lord Peter, and several short story collections, but they need not be read in order. The first is Whose Body? (published 1923), in which Lord Peter investigates a naked dead body found in the bath, wearing nothing but a pair of pince-nez.
My favorite is Gaudy Night (published 1935), a psychological thriller set at Oxford that features female protagonist Harriet Vane. Sayers is a mystery writer, but she approaches her topic delicately: though many of her novels feature murder plots, they’re not at all graphic.