The spirit of adventure seized upon Bunny. He let the door swing closed and caught her hand again.

Toby's delighted chuckle told him that she had fully recovered her equilibrium. Her fingers twined closely about his own.

"Now we shall have some fun!" she said.

They went forward together for a few yards in total darkness. Then, from somewhere high above them a faint light filtered through.

"That's on the stairs," said Bunny. "One of those window-slits through which in the old hospitable days all comers were potted at. Look out how you go!"

The words were scarcely uttered when they both kicked against the lowest stair and blundered forward. A squeal of laughter came from Toby. Bunny said "Damn!" with much heartiness and then laughed also.

"I knew it would be fun," said Toby. "Are you hurt?"

He raised her with a strong young arm. "No, I'm all right. Are you?"

"Yes. I'm loving it. What happens next? Do the stairs wind round and round till we get to the top?"

"Yes. There are about six hundred of 'em. Feel equal to it?"