When Tom Dawson dies in a golfing accident, his son Harry is convinced that there has been foul play. But it is not just because Harry is a CID officer that he is suspicious. His father was playing alone when a golf ball hit him from behind. And the man who played that fatal stroke, a certain Peter Newton, is murdered - just before Harry goes to see him.

Among Newton's possessions is an intriguing collection of photographs. Girls in every conceivable position - but mainly naked. Newton's girlfriend had a row with him just before he was murdered, but it seems that someone is putting pressure on her, too. And while Harry is trying to talk to her, he is knocked unconcious... When his father's housekeeper comes next on the murder list, Harry realises that he is deep in some very dirty business indeed.