Shaky? It surprised Terry to feel that he had forgotten about fear. He had been wrapped in a happiness keener than anything he had known before. Yet the scheme was far from accomplished. The real danger was barely beginning. Listening keenly, he could hear the sand crunch underfoot of the watcher who paced in front of the building; one of the cardplayers laughed from the room below—a faint, distant sound.

"Don't worry about me," he told Denver, and, securing a strong fingerhold on the edge of the ledge, he dropped his full length into the darkness under the skylight.

His tiptoes grazed the floor beneath, and letting his fingers slide off their purchase, he lowered himself with painful care so that his heels might not jar on the flooring. Then he held his breath—but there was no creaking of the loft floor.

That made the adventure more possible. An ill-laid floor would have set up a ruinous screeching as he moved, however carefully, across it. Now he whispered up to Denver. The latter instantly slid down and Terry caught the solid bulk of the man under the armpits and lowered him carefully.

"A rotten rathole," snarled Denver to his companion in that inimitable, guarded whisper. "How we ever coming back this way—in a hurry?"

It thrilled Terry to hear that appeal—an indirect surrendering of the leadership to him. Again he led the way, stealing toward a ghost of light that issued upward from the center of the floor. Presently he could look down through it.

It was an ample square, a full three feet across. Below, and a little more than a pace to the side, was the table of the cardplayers. As nearly as he could measure, through the misleading wisps and drifts of cigarette smoke, the distance to the floor was not more than ten feet—an easy drop for a man hanging by his fingers.

Denver came to his side, silent as a snake.

"Listen," whispered Terry, cupping a hand around his lips and leaning close to the ear of Denver so that the least thread of sound would be sufficient. "I'm going to cover those two from this place. When I have them covered, you slip through the opening and drop to the floor. Don't stand still, but softfoot it over to the wall. Then cover them with your gun while I come down. The idea is this. Outside that window there's a second guard walking up and down. He can look through and see the table where they're playing, but he can't see the safe against the wall. As long as he sees those two sitting there playing their cards, he'll be sure that everything is all right. Well, Denver, he's going to keep on seeing them sitting at their game—but in the meantime you're going to make your preparations for blowing the safe. Can you do it? Is your nerve up to it?"

Even the indomitable Denver paused before answering. The chances of success in this novel game were about one in ten. Only shame to be outbraved by his younger companion and pupil made him nod and mutter his assent.