Mystery, and much espionage, which doesn't come off as well as her straight of last year -- No Murder of Mine. A corpse in the attic of Persis Grant's lodging house leads Persia, and her employer, Chantrey, of the Ministry of Domestic Security, to investigate. Two murders of nonentities, a ring of refugees -- true and false, and Persia's near demise lead up to a plot to set London burning. Active -- but flat.