Unnatural death - Dorothy L. Sayers

A must-read for fans of Agatha Christie's Poirot and Margery Allingham's Campion Mysteries, Lord Peter Wimsey is the immortal amateur sleuth created by Dorothy L Sayers.

'No sign of foul play,' says Dr Carr after the post-mortem on Agatha Dawson. The case is closed. But Lord Peter Wimsey is not satisfied . . .
With no clues to work on, he begins his own investigation. No clues, that is, until the sudden, senseless murder of Agatha's maid. What is going on in the mysterious Mrs Forrest's Mayfair flat? And can Wimsey catch a desperate murderer before he himself becomes one of the victims?