PORTRAIT OF A PRIVATE COP... "Call me Mac... I'm just a guy. I go around and get in jams and then try to figure a way out of them. I don't make very much money and most people insult me one way or another... I'm a fairly good shot with small arms, show-thinking but thorough, and very dirty in a clinch." Mac gets into a jam this time even when he turns a job down. And all because of a book, an ex-gangster's patrician wife, and a red-headed cabaret...