Dane McKell, millionaire socialite, was planning an exhilarating summer when he discovered to his horror that his father was having an affair with another woman. The McKells were not only very, very rich, they were also very, very respectable, and Dane’s mother was a gentle and lovely lady. Dane forced a meeting with the woman in the case with the full intent of breaking up his father’s relationship. Then, helplessly, he himself fell in love with her. After that — murder. This is the basic situation, a brilliantly plotted detective story that only the old master, Queen, could devise, and that only Ellery, working with his father, Inspector Queen, could solve. As always with classic Queens, the reader will have it solved three times before he discovers that he has been outwitted as usual