There was a sharp crack as the top of the table split in two under their steady pressure and fell away. Now that their elbows were no longer supported they rose slowly to their feet, still locked equally, still straining with such force that it seemed human flesh and bone could not stand against it.

A whisper of awe sussurated through the room for it was scarcely believable, this sight which they were seeing with their own eyes. The hum and buzz of voices grew louder and there were a few cheers, including a war whoop from a table full of Onandagas. In response one of the English navvies shouted out “Break him in half, Fighting Jack!” and there were other calls as well. Strangely enough all of this had an odd effect on Sapper who, without relinquishing his hold in the slightest, looked up at his opponent and spoke, with some difficulty so tightly cramped was his jaw.

“Are you… the head ganger… Fighting Jack?”

Fighting Jack had the same difficulty in speaking but managed to produce the words, “I am.”

The results of this simple statement were startling to say the least, for when he heard them Sapper ceased straining against the other’s arm. Taken by surprise Fighting Jack was off balance and fell sideways and was twisted around so that the Iroquois was able to slap him on the shoulder as he went by. The result was what might be expected for the English ganger did not take lightly to this kind of treatment, so he continued turning until he had swung about in a full circle and was facing his opponent again—this time with his fists clenched and ready to do havoc. But before he could spring to the attack the Indian spoke.

“Well I’m the head ganger name of Sapper Cornplanter.”

Fighting Jack’s fists fell and he straightened up, evidencing the same look of surprise that had been on the other’s face a few moments earlier. They faced each other like this, then began to smile and in a moment began to laugh, shaking and bellowing with laughter to the bemusement and befuddlement of the onlookers, who were even more greatly shocked when the massive navvies clapped arms about each other’s shoulders, seized up bottles from the nearest tables and went out of the door laughing and drinking together.

“I presume you could explain their actions,” the Pinkerton man said.

“Surely,” was Gus’s response. “You know that Sapper is my head ganger here, and that Fighting Jack was my head ganger on the English end of the tunnel. Each man has heard of the other, knows of him by reputation, and knows as well that they are both my close friends, which to a navvy makes them buddies as well. So you see they have no reason to fight but instead plenty of reason to drink together which I am sure they are doing now.”

As he finished speaking Gus looked back to the table where the agent, Billygoat was sitting, whom he had forgotten for the moment, and he fought hard to conceal the shock that overwhelmed him.

“He’s gone! While we were watching the others, gone!”

Their mission was compromised; through inattention they had missed their chance to capture their saboteurs. Gus was abashed by this knowledge but Tracy seemed coldly indifferent. He had his watch out, a large pocket turnip, and was looking at the face of it.

“While you were watching the others,” said he, coolly. “I am too much an old hand at these matters to be distracted that easily. During the excitement the contact man saw his opportunity and signaled to Billygoat and they have both gone.”

“You should have told me, now we will never find them.”

“Quite the contrary; everything is going according to plan. I informed you that there were enemy watchers here and if we had left right after the others it would have been noticed and there would have been trouble. As it is we can now pay for the slops we drank,” he threw some coins on the table as he said this, “and leave now that the excitement is over. We will not be followed.” He glanced at his watch again before putting it away and climbing to his feet.

Gus came after, amazed at the other’s calmness in the face of obvious disaster, following him down the dank passage and out into the street once again. They gained the main avenue and Tracy turned in the direction of the waterfront.

“I will keep you in the darkness no longer, Washington,” said he. “As you have technical secrets in your trade so do we in mine. And Pinkerton has the best. The agent, Billygoat, has a certain device concealed in his right boot, in reality built within the sole of the boot itself and indetectable by any normal search. When contact was made with him he stamped his heel down hard in a precise manner. This ruptured a thin membrane within a cell that permitted acid in one half to flow into the other half, thereby transforming the inactive cell into an operating battery of great strength. The current thus generated goes to a powerful but compact radio generator also in the boot sole, the signal of which is sent up a wire that has been woven into the seam of his trousers. This connects to an aerial within his belt which broadcasts the powerful shortwave signal. You have seen me glancing at my watch?”

“I have indeed, and wondered at your sudden interest in the hour.”

“Not the time at all, for this watch contains a compact receiver, a direction finder that is tuned to the radio signal from Billygoat. See for yourself.”

He extracted the watch and held it flat in his hand, there being enough light from the nearest street gas lamp to make out the face. When he pressed the crown the hour hand glowed softly and spun about to point down the street towards the sea; then it returned to its proper position indicating the correct time when he released his grip.

“Ingenious, wouldn’t you agree? They are ahead of us, so let us proceed. We cannot see them which is perfect, for that means they cannot see us and will be unalarmed. The radio will point the way.”

As long as the street was well lit and occupied they strolled along casually, just part of the throng. But when the avenue they were on ended at the unlighted docks they turned around, as though completing a stroll there, and went back the way they had come. At the first turning they stopped for a moment and talked, still the casual strollers, while Tracy made sure they were not being observed. When they were clear he stepped into the shadows of the crossway and drew Gus after him.

“They are on the waterfront somewhere, the finder pointed in that direction. We shall make our way parallel to the harbor until we have a better indication of their destination.”

They did this, stumbling over rubbish and litter and disturbing cats and rats in their nocturnal rounds, until Tracy halted once again at a crossing and studied the pointing hand.

“Most interesting, for it now points slightly back in the direction from whence we came. Washington, you are the engineer and the surveyor and have an eye for this sort of thing. Take a bearing here down the street and we shall go back a bit to the next street for another cross bearing. Can you do that, determine where they are?”

“That is my trade,” he said with some assurance, squinting along the tiny arrow.

When he had repeated this ritual he thought for a moment then led the Pinkerton agent forward to a spot where they could see the dark wharves and the ships beyond. Unhesitatingly he pointed his finger.

“They are there.”

“Aboard that ship? You are sure?”

“You said earlier that you could not be distracted from your job. I might say the same for mine.”

“Then I unhesitatingly accept your information. We are ready for the final act to begin.”

Tracy then moved back a few yards in the direction they had come from and raised a whistle to his lips and blew lustily into it. Gus was slightly startled when no sound, other than the slight hiss of escaping air, emerged from it. Tracy saw his expression of puzzlement and smiled.