Under the circumstances the customer was permitted to leave the store, though the manager was pretty well satisfied that the clerk had made no mistake. Dick had seen the man examining the diamonds, but had noticed no suspicious movement on his part to get away with a gem. In his opinion the man had been wrongfully accused. Once he had seen the man put his left hand under the outside ledge of the showcase at the bottom and hold it there for a moment, but he thought nothing of that. At any rate, he knew there was no place there where a diamond could be lodged even temporarily. The clerk looked over the floor on the outside of the counter, but without result, so he felt sure that the customer had managed to get away with it somehow. In about half an hour a lady entered the store and went to the same counter. She wanted to look at some new style rings. While the clerk was producing a couple of trays, Dick, who was close by, saw her place her hand under the bottom ledge of the showcase and run it along there about a foot, an action the office boy thought strange. When she removed her hand she fumbled for her pocket. A moment or two later she was looking at the rings the clerk placed before her. At that juncture the manager called Dick and sent him down the block with a message. As he was coming back he saw the man who had been suspected of taking the diamond standing near the curb about a hundred yards from the store. He seemed to be waiting for some one. Down the street came the lady whom Dick had left examining the rings. She went directly up to the man and handed him something. Dick saw him hold the article up and pick at it. In another moment he tossed something away and put his finger and thumb into his vest pocket, then the couple walked away. The meeting of these two persons struck Dick as having a suspicious bearing on the missing diamond, though just what the connection was he could not say. He looked at the place where he had seen the man toss what the woman had handed him and saw a small, dark object. He went and picked it up. It proved to be a wad of chewing gum. Dick was disappointed with his discovery and was about to drop it when he noticed a deep impression in it that looked like the imprint of a diamond.