“I’ve never seen him,” said Johnson. “The child has never been brought to the office. I don’t know who he is or whose he is; I’ve an idea he’s a grandchild of Maitland’s.” There was a pause. “I see,” said Dick softly, and well he did see, for in that second began his understanding of the Frog and the secret of the Frog. “Why were you fired?” he asked. Johnson shrugged his shoulders. “Over a stupid thing; in fact, it’s hardly worth talking about. It appears the old man saw me at Heron’s Club the other night, and ever since then he’s been going carefully into my petty cash account, probably under the impression that I was living a fast life! Beyond the usual grousing, there was nothing in his manner to suggest that he intended getting rid of me; but this morning, when I came, I found that he had already arrived, which was an unusual circumstance. He doesn’t as a rule get to the office until about an hour after we start work. ‘Johnson,’ he said, ‘I understand that you know a Miss Ella Bennett.’ I replied that I was fortunate enough to know the lady. ‘And I understand,’ he went on, ’that you’ve been down there to lunch on one or two occasions.’ ‘That is perfectly true, Mr. Maitland,’ I replied. ‘Very well, Johnson,’ said Maitland, ‘you’re fired.’” “And that was all?” asked Dick in amazement. “That was all,” said Johnson in a hushed voice. “Can you understand it?” Dick could have said yes, but he did not. Elk, more curious, and passionately anxious to extend his knowledge of the mysterious Maitland, had something to ask. “Johnson, you’ve been right close to this man Maitland for years. Have you noticed anything about him that’s particularly suspicious?” “Like what, Mr. Elk?” “Has he had any visitors for whom you couldn’t account? Have you known him, for example, to do anything which would suggest to you that he had something to do with the Frogs?” “The Frogs?” Johnson opened his eyes wide, and his voice emphasized his incredulity. “Bless you, no! I shouldn’t imagine he knows anything about these people. You mean the tramps who have committed so many crimes? No, Mr. Elk, I’ve never heard or seen or read anything which gave me that impression.” “You’ve seen the records of most of his transactions; are there any that he has made which would lead you to believe that he had benefited, say, by the death of Mr. Maclean in Dundee, or by the attack which was made upon the woollen merchant at Derby? For example, do you know whether he has been engaged in the buying or selling of French brandies or perfumes?” Johnson shook his head. “No, sir, he deals only in real estate. He has properties in this country and in the South of France and in America. He has done a little business in exchanges; in fact, we did a very large exchange business until the mark broke.” “What are you going to do now, Mr. Johnson?” asked Dick. The other made a gesture of helplessness.