turned the flashlight in every direction about the cove there was no sign of the rowboat in which the two men had arrived.
It had vanished utterly.
Although the lads were prepared for the disappearance of the smugglers, they were not prepared for the disappearance of the rowboat. But they searched for it in vain. The light revealed nothing of the craft.
"I wonder where they hid it!" whispered Frank.
They began a systematic search of the bushes around the cove, remaining as quiet as possible, but although they made almost a tour of the place it was soon evident that the boat had not been beached under cover of any of the thickets.
"It must be hidden in a cave of some kind," Frank decided at last. "And that's where the smugglers are."
Once again they began a search of the bushes.
They were still wading in the water and their feet were now very cold, but they searched patiently and carefully, brushing aside the branches, peering into the bushes, but it seemed they were to find nothing but the uncompromising rocks and moss beyond.
At last, however, as they were approaching a part of the cove which they had not visited before, Frank, who was in the lead, stumbled suddenly forward. His groping feet had failed
