“Well, a few minutes ago, in the second-class, I was examining the contents of a dilapidated leather bag belonging to a little, wizen-faced old woman, very shabbily dressed, when I found down at the bottom a flat brown-paper parcel, wrapped carefully, tied with string and sealed with big blotches of black wax. I’m always suspicious of sealed packets, for they may contain anything from cigars to anarchists’ bombs; therefore I ordered her to break the seals and open it. At first she refused; but on my explaining the penalty incurred, she reluctantly obeyed, and there, to my great satisfaction, I saw your old manuscript. I looked inside, and although I know little about such things, I recognised it from your description to be the stolen volume.”

“Did you make any remark?”

“None,” was Mr Hammond’s reply. “I wished to consult you first. I did not put the usual label on the bag, so that when she passes ashore it will be stopped and again opened. What do you intend doing?”

I was puzzled. It was satisfactory to know where The Closed Book actually was, but, on the other hand, it would be difficult to regain possession of it. As my friend Hammond pointed out, I could give notice to the harbour detective on arriving at Dover, and he would detain the woman. But I should be compelled to charge her with theft. This I could not do. I could, of course, declare the book to be stolen property; but matters were the more complicated because of the theft having been committed in Italy.

For some time we discussed the situation; then I accompanied him through the second-class, where, on a chair in the gangway leading past the engines, sat a queer, dried-up looking little woman of about sixty-five, wearing a rusty black bonnet and cloak—a woman I had noticed during my tour of inspection, but whom I had never suspected of being in actual possession of my treasure.

The book had evidently been delivered to her in Paris, and she was taking it to London—to whom?

That question I put to myself decided me, and when I was out of hearing I told Hammond that I intended to follow her before claiming it, and thus ascertain, if possible, the motive of the strange international plot which was apparently in progress.

The short, wizened old lady was English: her face thin and yellow, with a pair of dark eyes that had probably once been beautiful, and hair still dark, though showing threads of grey. She wore black cloth gloves, worn out at the finger-tips, and was ponderous below the waist on account of thick skirts put on to protect herself from the cold sea-breeze.

Hammond declared that her speech was that of a well-born person, and that her frayed glove concealed a diamond ring—a circumstance which he viewed with considerable suspicion. Yet he entirely agreed with me that I should gain more by following her to her destination and watching carefully than by arresting her on landing. There was a deep, inexplicable mystery about the book and its contents; and in order to solve it I ought to be acquainted with those whom it interested.

“I can’t understand the manner in which you were poisoned by touching the leaves,” Hammond said reflectively. “That beats me altogether. Perhaps somebody else will have a taste of it before long.”