"What's the answer?" asked Tom, who could not make out what all the fuss was about.

"Did you see Abe's face?" asked Nat as they once more felt that it was safe to exchange remarks.

"Almost went white," replied Ned. "None is so frightened at ghosts as a darky."

"Ghost!" repeated Tom. "Do you mean to say there really is a ghost up there in that old rat-trap?"

"Something," replied Nat. "We have heard that same scream before, and it does not sound like anything human."

"Why in thunder didn't we go up and swat it?" asked Tom, quite disgusted that such an opportunity should have been missed.

"Because Roland has a dinner date, and because we were trespassing. You don't suppose we just want to walk into trouble like that, do you?" inquired Nat.

"Well, I'd take chances when it came to bagging a real live ghost. I hope we get another shot at it."

"There's the carriage," exclaimed Joe. "Just look at old Abe!"

"Scared stiff!" added Nat. "Well, I don't blame him. He was dangerously near that scream. Perhaps his passenger is a ventriloquist and threw her scream. The voice certainly came from the castle."