“And then?” I repeated; and I stopped, and instinctively my hands clenched.

“I will do what is right to England, Glynn,” he cried in tones of intense emotion, stretching out his hands to me. “Good heavens, man! don’t stare at me like that! I’m a creature of flesh and blood like yourself. I have feelings and a sense of honour just as you have. I have not gone into this business simply to feather my own nest. I have not fought my father—Fotheringay—Cuthbertson—I have not besought powerful assistance, such as Cooper-Nassington’s, to sell this country to some Continental enemies—no.”

“I take your word—I believe you have not,” I replied slowly. “The point is whether the Order of St. Bruno has, for it seems to me that they are the principals in this treasure hunt and not yourself.”

“Well, come with me and see,” replied Casteno, averting his eyes. “I have pledged myself, but you will not take my word. You doubt—you hint—you mistrust me.”

“I do,” I gasped. “I can’t help it.”

“Then, come.” And without another word he turned away, and, seizing the ivy that grew in rich profusion on both sides of the wall, he climbed up by this support, closely followed by myself. The drop on the far side was only a matter of some ten feet, and, aided by similar branches, we passed into the playground again, and soon found ourselves heading for the chief station in Worcester—Shrub Hill.

As Casteno, however, had predicted, we found the streets thronged with all manner of queer characters hastening to or from the races, and we managed to secure places in a “race special,” which was timed to run to Paddington with only four stops on the road. There were, we saw for ourselves, plenty of detectives in the station, and they had evidently got wind of us and our flight, for every wretched soldier who swaggered into the building was stopped and cross-examined, and we actually saw two poor privates in the engineer uniform, who had had a little beer, and were inclined to be cheeky and not to answer questions, bundled into a cab and driven off to the city police station.

Punctually, however, at the time appointed the train left with us. As it happened, by judicious tips we secured not only a first-class carriage to ourselves but copies of the London papers, which we had failed to get in Shrewsbury before we had to hurry off to the fête to look after our seats in the air-ship.

José, plainly, was fagged out, and no sooner did the train move off than he stretched himself across the seat and composed himself for a nap. I, however, was strung up to the highest pitch of excitement, not by the perils we had just passed through, but by the prospect of getting to the heart of the mysteries of that most mysterious Order of St. Bruno, which had all the ways and uniforms of regular monks without their recognised symbolism. Indeed, I had not forgotten what my guide said when I had walked across the courtyard of their house at Chantry Road, Hampstead—“We are neither Roman Catholics nor Anglicans”—and yet if they did not belong to one or other of these two persuasions to which sect did they belong, and what was the object of their banding together, with houses in Delhi, Sydney, London, and Mexico? And why, as José pretended, should they have any patriotic notions for England in preference to Spain—or France, or Russia, or Mexico for that matter? If the manuscripts really belonged to them, as the Spaniard declared, why didn’t they desire to get them, to keep them, and to recover the Lake of Sacred Treasure for themselves?

Try as I would, I could not, as the train rattled through the fragrant orchards and hopfields of Worcestershire, bring myself to believe that my companion had told me the whole of the truth about this mysterious Order and the part it played in the life of our times. Like most private investigators I had grown to realise that “’tis not the habit that bespeaks the monk,” and that often under the most simple and impressive guises there lurked secret forces that meant treachery and villainy of the worst description.