Another earthy foray into turn-of-the-century London crime--with Sergeant Joseph Bragg and his aristocratic sidekick Constable Morton, who made such an agreeable City Police debut in Why Kill Arthur Potter? (p. 505). This time, led on by an anonymous note, Bragg and Morton investigate the possibility of a coverup in the ""accidental"" death of M.P. Sir Walter Greville; the case soon becomes a tangled thicket of finance and politics--since Greville used his power as a banker to generate and hold on to political support. Half a dozen people, in fact, benefit mightily from Greville's demise. (Nor does his beautiful, social, rich young wife seem heartbroken.) But there'll be another murder--that of Greville's associate Major George Applin--and a hasty visit to a Geneva clinic. . . before the sleuths turn up the information they need to nab the culprit, saving the life of yet another targeted victim. Low-key, gaslit entertainment: neat, swift, and crisply evocative of the period.