Once more they pressed into the dark and once more Lucile resumed her attempt to disentangle the many problems which lay before her.

CHAPTER XVIII
FRANK MORROW JOINS IN THE HUNT

That she had reached the limit of her resources, her power to reason and to endure, Lucile knew right well. To go on as she had been day after day, each day adding some new responsibility to her already overburdened shoulders, was to invite disaster. It was not fair to others. The set of Shakespeare, the volume of Portland charts, the hand-bound volume from the bindery and this book just taken from the summer home of the millionaire, were all for the moment in the hands of the old man and the child. How long would they remain there? No one could tell save the old man and perhaps the child.

That she had had no part whatever in the taking of any of them, unless her accompanying of the child on this trip might be called taking a part, she knew quite well. Yet one is responsible for what one knows.

“I should have told what I knew about the set of Shakespeare in the beginning,” she chided herself. “Then there would have been no other problems. All the other books would be at this moment in their proper places and the old man and child would be—”

She could not say the words, “in jail.” It was too terrible to contemplate! That man and that child in jail! And, yet, she suddenly remembered the child’s declaration that she would not return the book to the summer cottage. She had said the book belonged to the old man. Perhaps, after all, it did. She had seen the millionaire’s son in the mystery room talking to the old man. Perhaps, after all, he had borrowed the book and the child had been sent for it. There was some consolation in that thought.

“But that does not solve any of the other problems,” she told herself, “and, besides, if she has a right to the book, why all this creeping up to the cottage by night by way of the water. And why did he assume that she was borrowing it?”

And so, after all her speculation, she found herself just where she had left off; the tangle was no less a tangle than before.

“Question is,” she whispered to herself, “am I going to go to the police or to the university authorities with the story and have these mysterious people arrested, or am I not?”

They reached the station just as the last train was pulling in. Florence and the child had climbed aboard and Lucile had her hand on the rail when she saw a skulking figure emerge from the shadows of the station. The person, whoever he might be, darted down the track to climb upon the back platform just as the train pulled out.