The Murder of Mrs. Davenport
The Murder of Mrs. Davenport is a 1928 mystery detective novel by Anthony Gilbert, the pen name of British writer Lucy Beatrice Malleson. It was the second novel featuring her amateur detective Scott Egerton. Synopsis
Shortly before his marriage to a wealthy woman, Sir Denis Brinsley is confronted with a figure from his past. Helen Davenport arrives and offers to sell him damaging letters between them that will likely destroy his coming marriage. Shortly after he refuses, she is discovered strangled. References

Bibliography
 Fielding, Steven . A State of Play: British Politics on Screen, Stage and Page, from Anthony Trollope to The Thick of It. A&C Black, 2014. Magill, Frank Northen . Critical Survey of Mystery and Detective Fiction: Authors, Volume 2. Salem Press, 1988. Murphy, Bruce F. The Encyclopedia of Murder and Mystery. Springer, 1999. Reilly, John M. Twentieth Century Crime & Mystery Writers. Springer, 2015. 1928 British novels
British mystery novels
British thriller novels
Novels by Anthony Gilbert
Novels set in London
British detective novels
William Collins, Sons books
Dial Press books