“I wish you’d tell me what is the matter with you?” she asked, as she turned to follow her belongings.

“I do not know,” Peter Ruff said. “I, suppose I am suffering from what you would call presentiments. Be at Charing-Cross punctually.”

“Why do you go at all?” she asked. “These people are of no further use to you. Only the other day, you were saying that you should not accept any more outside cases.”

“I must go,” Peter Ruff answered. “I am not afraid of many things, but I should be afraid of disobeying this letter.”

They had a comfortable journey down, a cool, bright crossing, and found their places duly reserved for them in the French train. Miss Brown, in her neat traveling clothes and furs, was conscious of looking her best, and she did all that was possible to entertain her traveling companion. But Peter Ruff seemed like a man who labors under some sense of apprehension. He had faced death more than once during the last few years—faced it without flinching, and with a certain cool disregard which can only come from the highest sort of courage. Yet he knew, when he read over again in the train that brief summons which he was on his way to obey, that he had passed under the shadow of some new and indefinable fear. He was perfectly well aware, too, that both on the steamer and on the French train he was carefully shadowed. This fact, however, did not surprise him. He even went out of his way to enter into conversation with one of the two men whose furtive glances into their compartment and whose constant proximity had first attracted his attention. The man was civil but vague. Nevertheless, when they took their places in the dining-car, they found the two men at the next table. Peter Ruff pointed them out to his companion.

“‘Double-Fours’!” he whispered. “Don’t you feel like a criminal?”

She laughed, and they took no more notice of the men. But as the train drew near Paris, he felt some return of the depression which had troubled him during the earlier part of the day. He felt a sense of comfort in his companion’s presence which was a thing utterly strange to him. On the other hand, he was conscious of a certain regret that he had brought her with him into an adventure of which he could not foresee the end.

The lights of Paris flashed around them—the train was gradually slackening speed. Peter Ruff, with a sigh, began to collect their belongings.

“Violet,” he said, “I ought not to have brought you.” Something in his voice puzzled her. There had been every few times, during all the years she had known him, when she had been able to detect anything approaching sentiment in his tone—and those few times had been when he had spoken of another woman.

“Why not?” she asked, eagerly.