“Oh, not that this had happened. But that the spy—or rather a network of espionage—existed. We move here in a web of intrigue wrought by ill-will, self-interest, vindictiveness and every form of malice. Whilst the great bulk of the Portuguese people and their leaders are loyally co-operating with us, there is a strong party opposing us which would prefer even to see the French prevail. Of course you are aware of this. The heart and brain of all this is—as I gather the Principal Souza. Wellington has compelled his retirement from the Government. But if by doing so he has restricted the man’s power for evil, he has certainly increased his will for evil and his activities.

“You tell me that Garfield was cared for by the parish priest at Penalva. There you are. Half the priesthood of the country are on Souza’s side, since the Patriarch of Lisbon himself is little more than a tool of Souza’s. What happens? This priest discovers that the British officer whom he has so charitably put to bed in his house is the bearer of dispatches. A loyal man would instantly have communicated with Marshal Beresford at Thomar. This fellow, instead, advises the intriguers in Lisbon. The captain’s dispatches are examined and the only document of real value is abstracted. Of course it would be difficult to establish a case against the priest, and it is always vexatious and troublesome to have dealings with that class, as it generally means trouble with the peasantry. But the case is as clear as crystal.”

“But the intriguers here? Can you not deal with them?”

“I have them under observation,” replied the colonel. “I already knew the leaders, Souza’s lieutenants in Lisbon, and I can put my hand upon them at any moment. If I have not already done so it is because I find it more profitable to leave them at large; it is possible, indeed, that I may never proceed to extremes against them. Conceive that they have enabled me to seize La Fleche, the most dangerous, insidious and skilful of all Napoleon’s agents. I found him at Redondo’s ball last week in the uniform of a Portuguese major, and through him I was able to track down Souza’s chief instrument—I discovered them closeted with him in one of the card-rooms.”

“And you didn’t arrest them?”

“Arrest them! I apologised for my intrusion, and withdrew. La Fleche took his leave of them. He was to have left Lisbon at dawn equipped with a passport countersigned by yourself, my dear adjutant.”

“What’s that?”

“A passport for Major Vieira of the Portuguese Cacadores. Do you remember it?”

“Major Vieira!” Sir Terence frowned thoughtfully. Suddenly he recollected. “But that was countersigned by me at the request of Count Samoval, who represented himself a personal friend of the major’s.”

“So indeed he is. But the major in question was La Fleche nevertheless.”