From the jacket:
For three years the man had lived in the little Lilac cottage on the Squire’s estate, yet apparently no one in that peaceful village knew a thing about him. The only significant clue that Superintendent Hanslet and Jimmy Waghorn found was the five pound bank note that he received on the day he died.
The minute they told Dr. Priestley about it he jumped to the bait and set forth on a trail that picked up such divergent clues as dope fiends, the dismantled engine of a motor mower, and the rear view of an odd man on a bicycle.
When the village good-for-nothing was found dead on the estate, it seemed to complicate the affair even more. But for Dr. Priestley it actually simplified things. He brings the case to a smashing conclusion that will leave the reader gasping at the ingenuity of the murders and the unfailing astuteness of this famous criminologist.
“Convincingly worked out.”—The Saturday Review