that two members of the blackmail gang had come to England. They had been seen to land at Dover, but got out between there and London; and their trace was lost. He said he wished to advise me at once, so that I might be on the alert. He would himself take his own steps as I understood. The messenger, when he saw I had read the letter, asked me if there was any answer. I said "only thanks" and he went away. It was not till afterwards that I remembered that I might have asked the man to tell me something of the appearance of the suspected men, so that I might know them if I should come across them. Once again I fell in my own esteem as a competent detective. In the meantime I could do nothing; Marjory's last appeal to me made it impossible for me to take steps against her wishes. She manifestly wanted the fight with the kidnappers to go on; and she wanted me to be with her in it heart and soul. Although this community of purpose was sweet, there grew out of our very isolation a new source of danger, a never-ending series of dangers. The complications were growing such that it would soon be difficult to take any step at all with any prospect of utility. Marjory would now be watched with all the power and purpose of the American Secret Service. That she would before long infallibly find it out, and that she would in such case endeavour at all hazards to escape from it, was apparent. If she did escape from their secret surveillance, she would be playing into the hands of her enemies; and so might incur new danger. I began to exercise my brain as to how I could best help her wishes. If we were to fight together and alone, we would at least make as good a battle as we could.
I thought, and thought, and thought till my head began to spin; and then an idea all at once sprang into my view. It was so simple, and so much in accord with
