“What package is it you want?” inquired Ned in amazement as he saw that Mackinder evidently intended to enforce his demand at all costs.

“I shall countenance no delay!” spoke the man sharply. “You may step to your luggage there and produce that package instantly. If you refuse I shall summon assistance and it will be taken forcibly.”

“You have the wrong pig by the ear this time, partner!” put in Jimmie. “Just put up your little cannon. It won’t do you any good here.”

“Enough!” snapped Mackinder. “You will gain nothing by attempting such methods. I am not to be balked by trivialities!”

“Well, Boss,” smiled Jimmie, “we haven’t got any ‘U-13’ package and we haven’t got any of those other things, either!”

“I warn you,” went on Mackinder in a menacing tone, “it has become known to the authorities that you have this package. I have been commissioned to secure it. If you surrender it before leaving this country you will lose nothing. If you refuse it will be taken by force. In that case you need not expect to receive any degree of clemency in the matter!”

“Mr. Mackinder,” began Ned with dignity, “we don’t understand what you mean. If you intend to infer that we have some mysterious package that we should not have you are not fair to us. Perhaps you would like to examine our luggage and be sure it is not there.”

“Very well,” stated Mackinder grimly. “If you insist.”

Keeping the revolver leveled in the direction of the group the man stepped to the side of the room. He grasped the old-fashioned bell-pull. In answer to his summons steps were heard approaching the door.

“Ah, there you are, Norton,” sighed Mackinder in a relieved tone as a man in uniform appeared. “Just keep an eye on these chaps, will you. I’m going through their luggage. Look sharp, now!”