Dorothy Leigh Sayers

Murder Must Advertise is a Lord Peter Wimsey mystery novel by Dorothy L. Sayers, published in 1933. Most of the action takes place in an advertising agency, a setting with which Sayers was very familiar. One of her advertising colleagues, Bobby Bevan, was the inspiration for the character Mr Ingleby.

Unnatural Death is a 1927 mystery novel by Dorothy L. Sayers, her third featuring Lord Peter Wimsey. It has also been published in the United States as The Dawson Pedigree.