The full meaning of that startling discovery was made evident to them an instant later. The officer of the Spaniards was standing to one side watching a man, who, with bowed head, was carefully scanning the ground.
And he was coming slowly toward the building.
"They're tracking us," whispered Clif.
And just then the man raised up his head and Clif got a glimpse of his face.
"The villain!" he gasped.
It was Ignacio!
Yes, it was the villainous Spanish spy. He and his Spanish companions must have succeeded in getting ashore. And they had tracked their unsuspecting enemies to their hiding-place.
"I wish I had killed him!" Clif muttered half to himself.
One of the sailors heard him, and he drew his revolver significantly.
"It's not too late, sir," he said.