Then all was still. Jimmie, hidden in the shadows, prepared to throw his la.s.so as soon as the visitor left the doorway.
"h.e.l.lo!"
The voice carried a hoa.r.s.e challenge.
"Any one here?"
The man was still in the doorway, and was swinging his light about so as to give him a better view of the room.
"If he would only drop his arms!" Jimmie mused. "I"d like to hit him with a ballclub!"
Directly the fellow did drop his arms, and at the same moment stepped out of the shelter of the doorway. This was what Jimmie had been waiting for, and he lost no time in acting.
The rope cut the air and descended over the intruder"s head and arms.
The lad"s hours of practice while playing cowboy now proved to be of great worth.
Jimmie gave a quick jerk as the rope landed and he ran to the back of the room. He heard the other fall, and knew by the weight that he was dragging him.
When he gained the wall he switched on the light and reached to a shelf for a weapon. When he faced his captive he held an automatic revolver in his hand.
By this time a torrent of expletives was coming through the helmet opening where the air-hose had entered. The prisoner rolled about on the floor, trying to get to his feet.
"Whoo-pee!" shouted the boy. "Look what one can catch out of the ocean!"
A roar of rage was the only answer.
"Take off that helmet!" commanded the boy.
A m.u.f.fled challenge came from the interior.
"All right," said the boy, "then I"ll take it off for you. But I"ll have this gun handy, and if you try any foolishness you won"t hold water when I get done shootin"."
Before long the helmet was off, and Jimmie was looking into as evil a face as he had ever seen. It was the face of a stranger, and yet there seemed something familiar about it.
"What sort of a game is this?" demanded the captive. "If you know what"s good for you, you"ll quit this cowboy business."
"Who are you?" asked Jimmie.
A snarl was the only reply. The enraged man was tugging fiercely at the rope.
"Quit it!" warned Jimmie. "I"ll have to put you to sleep if you try that."
"You don"t dare!"
"Don"t four-flush!" the boy advised.
"Release me!"
Jimmie sat down and leveled the weapon at the struggling man.
"I guess I"d better shoot," he said, calmly. "I suppose you"ve cut the boys" air-hose, and I"ll have to get back to New York the best way I can--alone. So, you see, I can"t be bothered with you."
The captive ceased his struggles and managed to rise to a sitting position. His eyes were not so threatening as before.
"No," he declared, "I didn"t cut the hose."
"Why? You"re equal to such a trick."
"I was told not to."
Jimmie hesitated a moment. He wished devoutly that he could believe what the fellow said.
"Who told you not to?" he then asked.
The captive shook his head.
"I don"t know his name," he said.
"And you are sailing with him?"
"All I know is that he is called the Captain."
"I see," said the boy. "Now, how comes it that you know so much of the plans of the Sea Lion?"
"What makes you think I do?"
"You found the groove in the door, and also the spring that opens the door to the water chamber."
"Oh, that!"
"Well?" the boy flourished his weapon, though nothing could have induced him to fire on the unarmed man.
"I was told what to do when I got here," was the reply.
"Did you see my chums on the way here?" The captive nodded.
"Where?"
"At the wreck."
"Where is your boat?" was the next question.
"On the other side of the wreck."
"And you are after the gold?"
"Of course."