Murder Must Advertise (Lord Peter Wimsey mystery series) by Dorothy L. Sayers is $1.99 for Kindle today. This is one of the best books in a great mystery series! The cover blurb says: The iron staircase at Pym’s Publicity is a deathtrap, and no one in the advertising agency is surprised when Victor Dean tumbles down it, cracking his skull along the way. Dean’s replacement arrives just a few days later—a green copywriter named Death Bredon. Though he displays a surprising talent for the business of selling margarine, alarm clocks, and nerve tonics, Bredon is not really there to write copy. In fact, he is really Lord Peter Wimsey, and he has come to Pym’s in search of the man who pushed Dean.
As he tries to navigate the cutthroat world of London advertising, Lord Peter uncovers a mystery that touches on catapults, cocaine, and cricket. But how does one uncover a murderer in a business where it pays to have no soul?