This is book number 3 in the Lord Peter Wimsey Mysteries (Audio) series.
The wealthy Agatha Dawson is dead-a trifle sooner than expected-but there are no apparent signs of foul play. Lord Peter Wimsey, however, senses that something is amiss and refuses to let the case rest-even without any clues or leads. Suddenly, he is faced with another murder: Agatha's maid. Can super-sleuth Wimsey find the murderer and solve the case before he becomes the killer's next victim?
The intricate trail of horror and senseless murder leads from a beautiful Hampshire village to a fashionable London flat and a deliberate test of amour.