Again concerned with the spiritual values of good and evil, which were such a large part of Vain Citadela (1948), this centers on the facts and events leading up to the murder of Rosa, an Austrian DP posing as a Swiss citizen. Safe in England, she is the witness to the murder committed by Harris, big time operator in London's black market. Her work as a domestic leads her to Eva, Harris' mistress, she recognizes the car, and tells Eva what she knows. Eva plays it her way, hires an untried razor man to scare off Rosa, but his doubledealing with the gang saves her when they attack him. Harris learns of the plan's miscarriage, realizes he will have to be the one to confront Rosa -- and kill her. But Inspector Lane has been closing in and his quest drives his quarry through all possible channels of escape to death in the Thames. A tighter, less overtly intellectual, book than the first, this still has more substance in the roots of human behavior than most suspense stories, more interest in the question of human integrity.