"Jerrold assured me that his real name was Heitzman, that he had been born of poor parents, and had been educated by an English shipping-agent in Hamburg, who had adopted him and sent him to England. On the Englishman's death he inherited about two thousand pounds, which he made the nucleus of his present fortune." "That's all news to me," said Jack reflectively; "and yet--" "What? Do you know something regarding Rodwell then?" inquired Sir Houston quickly. "No," he replied. "Nothing very extraordinary. What you have just told me surprises me greatly." "Just as it surprised me. Yet, surely, his case is only one of many similar. Thousands of Germans have come here, and become naturalised Englishmen." "A German who becomes a naturalised Englishman is a traitor to his own country, while he poses as our friend. I contend that we have no use for traitors of any sort in England to-day," declared Jack vehemently; both men being still engaged in searching the dead man's room to discover the message which it appeared had been his intention to leave after his death. They had carefully examined the grate, but found no trace of any burnt paper. Yet, from the fact that a piece of red sealing-wax and a burnt taper lay upon the writing-table, it appeared that something had been recently sealed, though the torn envelope bore no seal. If an envelope had been sealed, then where was it? "We shall, no doubt, be able to establish the truth of Jerrold's allegation by reference to the register of naturalised Germans kept at the Home Office," Sir Houston said at last. Jack was silent for a few moments, and then answered: "That, I fear, may be a little difficult. Jerrold has often told me how it had been discovered that it was a favourite dodge of Germans, after becoming naturalised and changing their names by deed-poll, to adopt a second and rather similar name, in order to avoid any inquiry along the channel which you have just suggested. As an example, if Ludwig Heitzman became naturalised, then it is more than probable that when he changed his name by deed-poll he did not adopt the name of Lewin Rodwell, but something rather near it." "Very likely," was the great doctor's remark. Suddenly Jack Sainsbury paused and, facing his companion, said: