“Good-bye,” Dick waved his cap to the girls, “we’ll whistle when we get to the beach.”
“Just look at Spindly gallop,” Dories said. “The poor thing is eager to get to its dinner, I suppose.” Arm in arm they turned toward their home-cabin.
“My, such exciting things are happening!” Nann exclaimed joyfully. “I wouldn’t have missed this month by the sea for anything.”
Dories shuddered. “I’ll have to confess that I’m not very keen about visiting the old ruin at——” She interrupted herself to cry out excitedly, “Nann, do look over toward the island. We forgot all about that sea plane. There it is just taking to the air. What do you suppose it has been doing out on that desolate island all this time?”
Nann shook her head, then shaded her eyes to watch the airplane as it soared high, again headed for Boston.
“Little do you guess, Mr. Pilot,” she called to him, “that tonight we are to discover the secret of your visits to the old ruin.”
“Maybe!” Dories put in laconically.
CHAPTER XXII.
THE OLD RUIN AT MIDNIGHT
Never had two girls been more interested and excited than were Dories and Nann as midnight neared. Of course they neither of them slept a wink nor had they undressed. Nann had truly prophesied. Dories declared that when she came to think of it, nothing could induce her to stay alone in that loft room at midnight, and that if she were to meet a ghost or any other mysterious person, she would rather meet him in company of Nann, Dick and Gib.
Every hour after they retired, they crept from bed to gaze out of the small window which overlooked the ocean. At first the fog was so dense that they could see but dimly the white line of rushing surf out by the point of rocks.