es forward, each dropping a man with a flying
tackle. All four went down in a struggling, kicking tangle of arms and
legs.

The battle was rough but short. Bud and Mel had the advantage of
surprise, and soon pommeled and grappled their foes into submission.

Bud, astride his opponent's chest with knees pinning the man's arms,
unlooped from his belt the wire he had brought.

"Here! Take some of this and wire your man's wrists together!" Bud told
Mel.

When the frogmen were safely bound, Bud and Mel allowed them to stand
up. Neither captive tried to escape.

"Now, my sneaky friends, talk!" Bud snapped. "What kind of a sightseeing
trip did you plan?"

The frogmen's jaws remained tightly clamped. Both looked flushed and
sullen as they faced their captors.

"Got their lips zipped, I guess," Mel said disgustedly.

Bud decided to try another tack. "Doesn't matter," he said carelessly.
"We know they're pals of the Mirovs."

Both men started as if they had been stung. Bud followed up quickly,
hoping to prod them into some unguarded remark.

"Just as we thought!" he snarled. "A couple of low-down Brungarian
rebels! And up to their usual amateurish spy stunts!"

The raiders' eyes blazed, but they maintained silence. Both, however,
kept darting looks of keen interest at the Americans' hydrolung gear.

Just as Bud was wondering how he could get the prisoners to the nearest
police headquarters, a jeep came bouncing into view across the sand.

"Hey! Police!" Mel exclaimed with a happy grin.

"We're in luck," Bud said. "They can take these creeps off our hands."

The jeep braked to a halt a few yards away, and two uniformed officers
hopped out.

"What's going on here?" said one, who was wearing a sergeant's stripes.
The jeep had the words BEACH PATROL stenciled on it in white paint.

"We just nailed these two Brungarian frogmen," Bud explained. "A sub put
them ashore--probably as spies or saboteurs. They won't talk to us, but
maybe you can pump them at headquarters."

The startled sergeant turned a cold eye on the two prisoners. "Got
anything to say for yourselves?" When neither answered, he unholstered
his revolver and covered them. "Better take off those wires and put
bracelets on them, Mike," he told his fellow officer.

The frogmen were handcuffed with cool efficiency and bundled into the
jeep. Meanwhile, the sergeant turned back to Bud and Mel.

"You fellows come along too," he ordered.

"But we haven't g