A quiet bravo! for a quietly effective example of the psychological mind-tracking subgenre that only a few writers--Margaret Millar and Ruth Rendell among them--have made as compelling as topnotch detection. The mind here is that of history teacher Arthur Milton, abandoned by his wife and his teen-aged daughter, and then suspected of the murder of the wife's new flame. Arthur didn't do it, but the appearance of the constabulary reminds him of a long-forgotten crime--the sex-slaying of his first love, a nymphet who demanded violence from her bedmates and got too much of it from one of them. Was Arthur that bygone killer? He's not sure, and neither is the beguiled reader, till Arthur's wandering path to the past--followed also by believably civil British policemen-leads, not too neatly and with great economy, to satisfaction all 'round.