Fortunately for Le Caron, the appearance of United States troops in the vicinity put any further attempt at war operations out of the question, for in order to avoid arrest for a breach of the neutrality laws the Fenians were compelled to disappear. The spy left with them and hurried to Malone and found a similar state of affairs prevailing there, although the arrest of O’Neill and the anticipated appearance of United States troops filled the invaders with dismay.

Le Caron was elated with his success and anxious to report himself at the Canadian headquarters without delay. He knew, however, that it would not be safe for him to go direct to Ottawa so he traveled in a roundabout way. One night he stopped with the Commissioner of the Quebec police, and the following morning took a train for Ottawa. Before this journey was concluded he found that he had been altogether too premature in his self congratulations, because that journey brought him closer to discovery than he had ever been before.

The incident which threatened to deprive him of his usefulness as a spy occurred at Cornwall where there was the usual half hour’s delay for dinner. He was in the midst of his meal, enjoying it with great zest in spite of the fact that his work as a spy had sent hundreds of men to their death, when two men stopped and gazed at him with unusual interest. One of them was tall and very military in his manner, and the other had on clerical attire. As Le Caron ceased eating he heard the clerical looking one say as he pointed his finger in his direction:

“That is the man!”

Advancing, the tall man, who subsequently turned out to be the Mayor of Cornwall, said with a Scotch accent:

“You are my prisoner!”

These words were accompanied with a strong grasp of the hand on the shoulder of the suspected one. He imagined there was some mistake, and laughed as he turned around to resume his dinner, but the Scotchman gave an added squeeze to his arm as he solemnly repeated the words:

“You are my prisoner, and you must go with me at once.”

It turned out later that the ministerial looking person was a wandering preacher who happened to be in the vicinity of Malone when Le Caron was loading arms there and he had been pointed out to him as the leading Fenian agent. The preacher’s memory was a very good one, and he immediately recognized the spy when he met him again.

It was a serious condition of affairs for Le Caron, but still he could not entirely comprehend what it all meant, and he said: