"Nothing but sandwiches and ices, I guess," said Ossie. "I wouldn't object to a steak and onions, myself. Funny how hungry you get up in this part of the world." "You sure do," agreed Wink. "Let's move along. If the Corwin family gets in there ahead of us we might just as well pull in our belts and beat it." "Let's go in through here," said Perry. "It's nearer, I guess." He started toward the first window. "Oh, we'd better not," Ossie objected. "They might not like it." "Piffle! They'll be tickled to death. They like folks to see their pretties." He stepped through the window and, dubiously, his companions followed. The library was a huge apartment, occupying, as it seemed to them, more than half the length of the house, with several long windows opening onto the terrace at the front. The furnishings were sombrely elegant and the dim lights caught the dull polished surface of mahogany and glinted on the gold-lettered backs of the shelf on shelf of books that hid the walls. Deep-toned rugs rendered footsteps soundless as they made their way toward the wide doorway at the far end of the room. They had traversed barely a third of the distance when a sudden sound brought them up short. One of the windows that opened onto the terrace further along swung inward and a middle-aged man in evening attire stepped into the room. Perry, in spite of his former assurance, drew back into the shadow of a high-backed chair, stepping on Wink's foot and bringing a groan from that youth. The newcomer, however, evidently failed to hear Wink's protest, for, closing the window behind him in a stealthy manner, he crossed the further end of the library and paused beside a huge stone fireplace. Wink and Ossie had dropped to the protecting darkness of a big table, but Perry still peered, crouching, from behind the chair. In the dim light of an electric lamp the intruder's face had shown for an instant, and in that instant Perry had sensed it all! The stealthy manner of the man's entrance from the terrace instead of by the door, the plainly furtive way in which he crossed the room and the anxious expression of his face, a face which Perry saw at once to be criminal, was enough! The watcher was not in the least surprised when the man, hurriedly and still stealthily, drew out a square of mahogany paneling at the left of the fireplace and revealed the front of a small safe. Perry's heart began to thump agitatedly at the thought of witnessing a robbery. The man's fingers worked deftly at the knob. Perry could hear in the silence the click of the tumblers as they slid into place. Then the door was pulled open. Between Perry and the robber lay a full thirty feet of floor, and a big table impeded his progress, but it took the boy less than a second to cover the distance, to seize the robber from behind, pinioning his arms, and to bear him heavily back to the floor. CHAPTER XVII FLIGHT "Wink!" he cried. "Ossie! Come quick! Help here!"