at finding a solution, and contented myself with exactly carrying out the instructions which I had received.  With a hand valise, specimen-case, and a loaded cane, I was waiting at the Paddington bookstall when Lord Linchmere arrived.  He was an even smaller man than I had thought—­frail and peaky, with a manner which was more nervous than it had been in the morning.  He wore a long, thick travelling ulster, and I observed that he carried a heavy blackthorn cudgel in his hand.

“I have the tickets,” said he, leading the way up the platform.

“This is our train.  I have engaged a carriage, for I am particularly anxious to impress one or two things upon you while we travel down.”

And yet all that he had to impress upon me might have been said in a sentence, for it was that I was to remember that I was there as a protection to himself, and that I was not on any consideration to leave him for an instant.  This he repeated again and again as our journey drew to a close, with an insistence which showed that his nerves were thoroughly shaken.

“Yes,” he said at last, in answer to my looks rather than to my words, “I am nervous, Dr. Hamilton.  I have always been a timid man, and my timidity depends upon my frail physical health.  But my soul is firm, and I can bring myself up to face a danger which a less-nervous man might shrink from.  What I am doing now is done from no compulsion, but entirely from a sense of duty, and yet it is, beyond doubt, a desperate risk.  If things should go wrong, I will have some claims to the title of martyr.”

This eternal reading of riddles was too much for me.  I felt that I must put a term to it.

“I think it would very much better, sir, if you were to trust me entirely,” said I.  “It is impossible for me to act effectively, when I do not know what are the objects which we have in view, or even where we are going.”

“Oh, as to where we are going, there need be no mystery about that,” said he; “we are going to Delamere Court, the residence of Sir Thomas Rossiter, with whose work you are so conversant.  As to the exact object of our visit, I do not know that at this stage of the proceedings anything would be gained, Dr. Hamilton, by taking you into my complete confidence.  I may tell you that we are acting—­I say `we,’ because my sister, Lady Rossiter, takes the same view as myself—­with the one object of preventing anything in the nature of a family scandal.  That being so, you can understand that I am loath to give any explanations which are not absolutely necessary.  It would be a different matter, Dr. Hamilton, if I were asking your advice.  As matters stand, it is only your active help which I need, and I will indicate to you from time to time how you can best give it.”