Brazilian Gold Mine Mystery

As Biff awakened, the steady sound made him think that he was back on the plane above the Amazon. He opened his eyes expecting to see the yellow sea far below.

“Not quite,” declared Mr. Stannart dryly, “although I must say that Mr. Serbot and I have continually operated along similar lines. However, it wasn’t until after your father to...

From the great central room, Joe Nara led his companions down through a maze of shafts and tunnels. Each passage joined with another, and frequently the links were steep steps w...

Mr. Brewster shouted the order above the river’s tumult, and all three bent to the task. They brought their boat broadside to the approaching brink and drove it toward the left...

While the others stood rooted, staring upward, Biff looked for his father, in the frantic hope of giving him some last-moment warning. Up ahead, Mr. Brewster was waving for them...

That jog from Kamuka’s hand gave Biff a sudden idea. Biff was holding the mirror so it threw a big spot of sunlight on the hut wall. The spot wavered when Kamuka jogged Biff’s a...

The warning came from Kamuka as the Indian boy grabbed Biff’s arm, hauling him away from Urubu. But there was no way for them to dodge, except toward the wall, as Urubu was betw...

The twang of the head-hunter’s bowstring was drowned by an explosive burst from farther up the trail. With it, the Macu marksman gave an upward, sideward jolt at the very instan...

Mr. Brewster swung about at Biff’s warning, an instant too late. The hand had already clutched the map and was snatching it from his grasp. The map tore apart, leaving only a co...

Wildly, Biff tumbled from his hammock to the soggy ground. Coming to his hands and knees, he started forward just as another figure sprang into the firelight, too late to halt L...

Biff was wide awake now, the drone of the plane growing louder in his ears. With it, his suspicions of Serbot faded. The smiling man was leaning back in his seat, his own eyes c...

Kamuka repeated that warning as the snake’s long body slid slowly past. Whether or not the creature was in search of other prey, to move would be to attract it. Biff realized th...

From the babble that followed, Biff realized that the damage had been done. The bearers shied away as though the tiny heads were alive and ready to attack them. They made a hurr...

With the first crackle of Nara’s rifle, Mr. Brewster shouted, “Down everybody—and get ready for them!” That, Biff knew, could be more than just a shower of spears. The warriors...

The two were captured without a struggle. The Macus brought out rawhide bowstrings and tied the wrists of the prisoners behind them. They also tied their ankles together, but in...

Biff flung his arms upward, as he tried to duck away. It was a hopeless effort, for nothing could have saved him from those fierce claws, once the jaguar reached him. What stopp...

When Joe Nara reached the big campfire, he extended his hands above the simmering kettle and swept them back and forth in slow, impressive fashion. His back was toward the half-...

Biff stopped a dozen feet short of the spot where Kamuka, arms emerging from the mire, was frantically waving him back. Biff felt the soft bank giving way beneath him, and he im...

Biff’s first concern was for Kamuka. He managed to dart a quick look along the trail hoping to shout a warning to his companion. Then, Biff caught himself, fearful that such a c...

Mr. Stannart spoke in a low, tense tone as he glanced around the waiting room at Idlewild Airport. Biff Brewster felt a sudden surge of excitement when he took the envelope that...