moving
the liquor.

"Believe me, if I could find that fellow," grunted Bob, and he did not
finish the sentence.

"Well," said Jack, looking out of the window, "it's daylight now.
Let's go down and have a look at those torpedo things on the beach.
Then we can take a plunge and go home. I'm beginning to feel let down
now, and I could sleep the clock around."

The others agreed, and passing through the living room made their way
outdoors and headed for the beach. Frank stopped suddenly, and emitted
an exclamation of disgust.

"We're a fine crowd," he said. "Why hasn't one of us thought of that
radio-controlled airplane before? What's become of it?"

"Oh, I guess it's somewhere along shore in Starfish Cove," said Jack.
"We'll soon see."

But arrival at the beach failed to disclose the tiny speedster of the
sky. Only the great metal objects lay outstretched above the tide,
like so many seal basking in the sun. The disappearance of the plane
was temporarily forgotten, while they investigated. As they had
surmised, these objects proved to be liquor containers, from several
of which the cases of bottled liquor in the holds had not yet been
removed. They were replicas of each other. At the rounded end was a
propeller driven by an electric motor. A rudder governed by an
electric compass imparted direction. A wire trailing overside and a
spiral aerial coiled upright about a mast completed the mechanism.

"Mighty ingenious," declared Jack, inspecting one of the contrivances.
"And it must have cost a pretty sum to build it, too. These liquor
smugglers certainly must have money behind them. Until we became
involved in this business, I had no idea except in a general way that
all this was going on, certainly no idea that it was organized as it
is."

While Jack and Bob bent above the radio boats, absorbed in examination
of them, Frank pursued further search for the missing radio-controlled
airplane. Presently he rejoined his comrades with the information that
it was to be found nowhere along the shore and that apparently it had
not drifted away, as at first he had suspected might have been the
case, because the sun had risen now and except for the Nark and her
two boats drawn upon shore, there was nothing in sight.

Suddenly, as he concluded his report, another idea came to Frank and
he laughed aloud.

"What's the joke?" demanded Bob. "Have you done----"

"No, sir," Frank interrupted, "I've not gone crazy, at least not a