"I think you should watch and do what seems plainly needful, but nothing more. Don't try to make clever plans, but take Mackellar into your confidence."

"You haven't met him," Andrew said in surprise.

"Jim has, and I know what he thinks of him."

Andrew took her advice and soon afterward left Appleyard in the side-car. Whitney let the high-powered bicycle go when they turned into the main western road, which runs, straight and level, along the Solway, and they reached Dumfries in an hour. Mackellar had not left his office and in five minutes Andrew had made the situation plain. Mackellar pondered it silently for a time, and then looked up.

"Weel," he said, "it gets interesting and I must set to work. I'll let ye know when I have anything to report."

Andrew, knowing his man, was satisfied with this. He and Whitney drove home at full speed, and arrived before their absence had been noticed. Williamson left the next morning, and Madge Whitney a few days afterward, and nothing of importance happened during the following week; but Mackellar had, in the meantime, been carrying out a plan that was to have some influence upon Williamson's affairs.

CHAPTER XV
A BARGAIN

There was no Sunday delivery of letters, and one Monday morning Williamson sat rather anxiously watching the road outside a small country house beside the Tweed. One of the tall gateposts at the end of the drive had sunk to a slant and the gravel had not been rolled or raked for some time. The borders round the lawn hinted at economy in bedding out and gardener's hire, and the old house had a dilapidated look. These things were significant and explained why Williamson had been received there as a paying guest, with the privilege of some rough shooting and salmon-fishing.

He could have found cheaper quarters, but the place suited him. For one thing, his residence there gave him a certain standing in the country, and his host, a decayed Scottish gentleman, was getting old and left him alone. He could go and come as he liked without exciting remark, and the people he met were well bred and not imaginative. Since he had been received by his host, they took it for granted that he was a man one could be friendly with.