So, with pitiless candor, spoke Desperation, and Curiosity, knowing the glamor of adventure and the charm of the unknown, added alluringly, "This is no ordinary mystery; Marshall Hamilton and Cyrus McKay are two of the biggest men in New York. Opportunity, they say, knocks but once, and this may be your life's turning-point. You cannot disregard it."

Thus the secretary gave ear to all these arguments in turn, but in the end it was the promptings of Caution that he heeded most, for the primary instinct of self-preservation told him that life, even to a man hampered by his debts, was still much to be preferred to death and oblivion. Yet it was hard for him to think of wholly abandoning the undertaking, and presently it occurred to him that there was more than one method of solving the mystery, and that a compromise was not in the least impossible. It was true that Marshall Hamilton had vanished through a picture in the wall, but it was also true that Cyrus McKay had disappeared into the woods adjoining the links; and while Caution counselled him to avoid the gallery, Curiosity, on the other hand, persistently insisted upon a vicarious pursuit of McKay.

Nolan, of course, was clearly the man for the job. He drove his employer to the golf course; therefore he had the opportunity. He was physically strong and courageous; therefore he would not shrink from danger. And he was pleasure-loving and always in debt; therefore a reward would be certain to appeal to him. Beyond question, Nolan was the man.

"But is it right," asked Decency, "to send someone else where you would not venture yourself?" To which query Desperation promptly answered, "Oh, in this world you can't be too particular; it's a case of each man for himself. There probably isn't any danger, anyway, and if you should get hold of anything really valuable, you can make it right with Nolan later."

Thus the discussion ended. "I'll try it," decided Bellingham, and taking the receiver from the hook he telephoned to the stables and ordered the motor in time to catch the next train for town.

An hour later, he emerged from the subway, and made his way rapidly down the street in the direction of the garage where Nolan kept his car. A sense of guilt oppressed him, and though he realized that his fears were wholly groundless, he could not prevent himself from casting occasional furtive glances to left and right, as though apprehensive of pursuit.

At length he came to the garage, and hailing the first workman whom he met, inquired if Nolan were around. The man jerked a thumb over his shoulder. "Back of the shop," he answered briefly. "Sixth floor. Freight elevator. Run it yourself." And went on with his task.

Bellingham made his way in the direction indicated, entered the elevator and pulled the rope, and began his leisurely ascent past floor after floor littered with cars--cars new and old, cars good and bad, cars whole and cars dismembered--until he came to the sixth story, where he stopped the elevator and to his joy discovered Nolan, cigarette in mouth, seated placidly upon a bench at the end of the room, superintending repairs, real or imaginary, upon Mr. McKay's machine. Thrilling with renewed excitement, the secretary walked over to him, and Nolan, when he recognized his visitor, greeted him cordially.

"Hello, Mr. Bellingham," he cried. "Didn't expect to see you quite so soon."

"Oh, just a little business matter," the secretary replied, trying hard to make his voice sound nonchalant and under control. "Walk over as far as the window, and I'll tell you what I want."