CHAPTER 16INSPECTOR BULL knocked on the door of Miss Caroline Winship’s flat on the first floor of Number 4 Godolphin Square, and waited with a feeling of comfortable complacency that he would ordinarily have been the first to suspect. He had, to the best of his belief, knocked up a century. Two of his problems, worrisome nuisances at any time but especially so when he had got a murder on his hands, were, if not solved, at least merged into one which he expected would thereby take care of itself. Instead of two gifted amateurs (the Assistant Commissioner’s expression) diligently mucking up the tracks he was laboriously and painstakingly trying to sort out and follow, he had managed to set them to minding and circumventing each other. With the American looking after him, Mr. Pinkerton could
