Murder at Derivale, first published in 1958, is book no. 66 in the Dr. Priestley detective story series. 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. Murder at Derivale one of the final books in the Priestley series, has Inspector Jimmy Waghorn (assisted by the now elderly Dr. Priestley) investigating the death by poisoning of a man found dead in a truck parked in his neighbor''s yard. Diamond smuggling and realistic police procedures are also featured.