Luckily the ground was quite firm. It had once been planted with grass, and though the grass had died, its roots remained densely enough to form a firm matting, and there was no telltale crunching of the sand underfoot. Even so, some slight sound made the guard pause abruptly in the middle of his walk and whirl toward Terry. Instead of attempting to hide by dropping down to the ground, it came to Terry that the least motion in the dark would serve to make him visible. He simply halted at the same moment that the guard halted and trusted to the dark background of the house which was now beside him to make him invisible. Apparently he was justified. After a moment the guard turned and resumed his pacing, and Terry slipped on into the narrow walk between the bank and the adjoining house on the right. He had hoped for a side window. There was no sign of one. Nothing but the sheer, sloping adobe wall, probably of great thickness, and burned to the density of soft stone. So he came to the front of the building, and so doing, almost ran into a second guard, who paced down the front of the bank just as the first kept watch over the rear entrance. Terry flattened himself against the side wall and held his breath. But the guard had seen nothing and, turning again at the end of his beat, went back in the opposite direction, a tall, gaunt man--so much Terry could make out even in the dark, and his heel fell with the heaviness of age. Perhaps this was Lewison himself. The moment he was turned, Terry peered around the corner at the front of the building. There were two windows, one close to his corner and one on the farther side of the door. Both were lighted, but the farther one so dimly that it was apparent the light came from one source, and that source directly behind the window nearest Terry. He ventured one long, stealthy pace, and peered into the window. As he had suspected, the interior of the bank was one large room. Half of it was fenced off with steel bars that terminated in spikes at the top as though, ludicrously, they were meant to keep one from climbing over. Behind this steel fencing were the safes of the bank. Outside the fence at a table, with a lamp between them, two men were playing cards. And the lamplight glinted on the rusty old safe which stood a little at one side. Certainly old Lewison was guarding his money well. The hopes of Terry disappeared, and as Lewison was now approaching the far end of his beat, Terry glided back into the walk between the buildings and crouched there. He needed time and thought sadly. As far as he could make out, the only two approaches to the bank, front and rear, were thoroughly guarded. Not only that, but once inside the bank, one would encounter the main obstacle, which consisted of two heavily armed men sitting in readiness at the table. If there were any solution to the problem, it must be found in another examination of the room.