At this point old Jack made his appearance, putting on an air of alarm and dismay.

"Who are you?" he demanded, in a tone which he partially succeeded in making tremulous.

Bill took up the reply.

"Are you the janitor?" he asked.

"Yes, gentlemen. What do you want?"

"Keep quiet, and we will do you no harm. We want you to open the safe."

"I can't do that, gentlemen. I can't betray my trust."

"All right; I'll do it myself. Give us the key. What's the combination?"

"Hartford."