Then Dave was left alone once more, and all three of his captors apparently left the building.

The room was warm, and for this the captive was grateful. A chair had been placed for him to sit upon, so he was fairly comfortable. An hour passed and during that time all was silent. Then somebody came in and started to release his arms and take the bag from his head.

It was a man, tall and muscular, and Dave felt sure he had seen him before, but where he could not remember. The man wore a mask, made of a handkerchief with holes cut in it for his eyes.

"Sorry I can't let you go just yet," he said. "But here is something to eat and to drink." And he pointed to a table, upon which rested a lamp, for it was now late in the evening and dark. On the table was a cup of hot tea and several cheese sandwiches and a small baker's pie.

"Well, I'm hungry, that's certain," said Dave, grimly. "And if I've got to stay here I might as well eat."

"That's the sensible way to talk," answered the man.

"When are you going to let me go?"

"I can't say yet—most likely in the morning."

"Why did you bring me here?"

"Just for fun."