Certainly a good deal of the evidence pointed to Gething. Gething knew the stones were there. According to Duke, no one else could have got hold of the key to the safe to make an impression. Moreover, his body was found before the safe with the latter open. All circumstantial evidence, of course, though cumulatively strong. However, whether or not Gething had contemplated robbery, he had not carried it through. Some one else had the diamonds. And here the obvious possibility recurred to him which had been in his mind since he had heard the Superintendent’s first statement. Suppose Orchard was the man. Suppose Orchard, visiting the office in the evening, arrived to find the safe open and the old man stooping over it. Instantly he would be assailed by a terrible temptation. The thing would seem so easy, the way of escape so obvious, the reward so sure. French, sitting back in the arm-chair, tried to picture the scene. The old man bending over the safe, the young one entering, unheard. His halt in surprise; the sudden overwhelming impulse to possess the gems; his stealthy advance; the seizing of the poker; the blow, delivered perhaps with the intention of merely stunning his victim. But he strikes too hard, and, horrified by what he has done, yet sees that for his own safety he must go through with the whole business. He recalls the danger of finger prints, and wipes the handles of the poker and of the drawer in the safe from which he has abstracted the diamonds. With admirable foresight he waits until the body grows cold, lest an examination of it by the policeman he intends to call might disprove his story. Then he rushes out in an agitated manner and gives the alarm. Though this theory met a number of the facts, French was not overpleased with it. It did not explain what Gething was doing at the safe, nor did it seem to fit in with the personality of Orchard. All the same, though his instruction to his man to shadow Orchard had been given as an obvious precaution inevitable in the circumstances, he was glad that he had not overlooked it. Another point occurred to him as he sat thinking over the affair in the leather-lined chair. If Orchard had stolen the stones, he would never have risked having them on his person when he gave the alarm. He would certainly have hidden them, and French could not see how he could have taken them out of the building to do so. A thorough search of the offices seemed therefore called for. The Inspector was tired, but, late as it was, he spent three solid hours conducting a meticulous examination of the whole premises, only ceasing when he had satisfied himself beyond possibility of doubt that no diamonds were concealed thereon. Then, believing that he had exhausted the possibilities of the scene of the crime, he felt himself free to withdraw. Dawn was appearing in the eastern sky as he drew the door after him and set off in the direction of his home.