Gordon Holmes has a happy method in the way he talks to his readers. He takes something for granted instead of spinning out to a fine point every single idea.He gives us two diametrically opposite characters in his two detectives—the Scotland Yard man and the amateur. Then he gives his readers the same clues the detectives have in Lady Dyke's disappearance.No reader can resist the subtle invitation to speculate as to what has happened and is going to happen. It is a most involved tangle.