Tedious, elaborate details of financial chicanery slow the pace in financier-sleuth Mark Treasure's new escapade--which has him involved with Roxton International Builders, about to start a multimillion-dollar development in the resort town of Top-haven. Opposing this move: local grande dame Lady Louella Brasset, who threatens to have one of the site's about-to-be-demolished structures declared an historic monument. So who turns up ""accidentally"" dead--just as Treasure arrives to size up the situation? Louella, of course. And Treasure meets a slimy group of hard-up property owners anxiously awaiting their buy-out money--plus their slick lawyer Denis Pitty, who has a personal-profit angle that involves the restless, young wife of ailing Canon Algernon Tring. (Also: what about pulp-writer Lance Elderberry, whose secrets were known by Louella?) Another murder ensues; so do some dirty tricks. But Treasure sorts it all out--winding up with a wild bicycle chase through town--as reader-interest fades amid the finance/legal/historical minutiae and the arch locutions.