John Rhode 
Fatal Garden [EPUB ebook] 

The Fatal Garden, first published in 1949, is book no. 49 in the series of mysteries featuring private detective Dr. Priestley and Scotland Yard’s Superintendent Waghorn. Author John Rhode, a pen name of Cecil Street (1884-1964), was a prolific writer of mostly detective novels, publishing more than 140 books between 1924 and 1961. From the dustjacket: "Yes, the initial murder in this book was certainly committed on a path in a garden; but it is possible that the ingenious author chose this title to suggest his manner of dealing with his readers. For, though always perfectly fair and with a soul above such things as "red herrings, " he can usually be found to have some little surprises up his sleeve. Such, for instance, in this book is the mystery of the Bedford Row solicitor. . ."