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200 "I could find out little more about him, however. In the end, I decided that I must force an interview. I took my revolver with me. In the brief glimpse I had had of him, I had realized that he was a physical coward. No sooner were we face to face than I recognized that he was afraid of me. I soon forced him to tell me all he knew. He had engineered part of the robbery and Anita Grünberg was his wife. He had once caught sight of both of us when we were dining with her at the hotel, and, having read that I was killed, my appearance in the flesh at the Falls had startled him badly. He and Anita had married quite young, but she had soon drifted away from him. She had got in with a bad lot, he told me—and it was then for the first time that I heard of the 'Colonel.' Carton himself had never been mixed up in anything except this one affair—so he solemnly assured me, and I was inclined to believe him. He was emphatically not of the stuff of which successful criminals are made.

"I still had the feeling that he was keeping back something. As a test, I threatened to shoot him there and then, declaring that I cared very little what became of me now. In a frenzy of terror he poured out a further story. It seems that Anita Grünberg did not quite trust the 'Colonel.' Whilst pretending to hand over to him the stones she had taken from the hotel, she kept back some in her own possession. Carton advised her, with his technical knowledge, which to keep. If, at any time, these stones were produced, they were of such colour and quality as to be readily identifiable, and the experts at De Beers' would admit at once that these stones had never passed through their hands. In this way my story of a substitution would be supported, my name would be cleared, and suspicion would be diverted to the proper quarter. I gathered that, contrary to his usual practice,