While she was gazing in rapt admiration upon the blazing jewels, the messenger returned, accompanied by a policeman in plain clothes.

"Excuse me, Miss, I wish to speak to a customer," said the jeweller, as he met the officer and silently took him up to the farther end of the shop to his desk, opened a little drawer and showed him the watch and the photographs.

Then they conferred together for a short time. The jeweller told the policeman how the watch had fallen into his hands; but that the pretended owner, finding that he could not repair it while she waited, had refused to leave it, and insisted on taking it home with her.

"Give it to her. Let her take it home. She can then be followed and her residence ascertained. I think, without doubt, that we have now got a certain clue to the perpetrators of the robbery and murder at Castle Lone."


CHAPTER XIII.

A SURPRISE FOR MRS. SCOTT.

"Will ye gie me my watch or no?" exclaimed Rose, growing impatient of the whispered colloquy between the jeweller and the policeman in plain clothes, although she was quite unsuspicious of its subject.

"Here it is, madam," said the jeweller, with the utmost politeness, as he came and placed the watch in her hand.

She attached it to her chain and then left the shop.