There was a touch of frost in the still air and the light was fading.

A yellow glow lingered in the southwest beyond Criffell's sloping shoulder, which ran up against it, tinged a deep violet. Ma.s.ses of soft, gray cloud floated above the mountain's summit; but the sky was clear overhead, and a thin new moon grew brighter in the east This was why the murmur of the sea came out of the distance in a m.u.f.fled roar, for the tides run fast when the moon is young.

Elsie, walking homeward, vacantly noticed how bright the crescent gleamed above the dusky firs, as she entered the gloom of a straggling wood at the foot of the hill on which Appleyard was built. She had been out all the afternoon and now she shrank from going home, for she felt that a shadow rested upon the house. d.i.c.k had returned from a cruise with Andrew, looking dejected and unwell; and she was glad that Whitney had taken both away again, on his motorcycle, because d.i.c.k had lately had fits of moody restlessness when he was at home. Still, she missed them badly, for her mother was silent and preoccupied; and when Andrew was away, she found it hard to banish the troubles that seemed to be gathering round. They were worse for being very vaguely defined, but she felt convinced that something sinister was going on.

As she thought of Andrew, her face grew gentle and she smiled. She knew his worth and his limitations, and loved him for both. He had his suspicions, too, and would follow where they led. Andrew was not the man to shirk a painful duty, but she could not openly help him yet.

That might come, and in the meanwhile she would at least put no obstacle in his way. Still, if her fears were justified, the situation was daunting and she might need all her courage.

As she neared the lodge, she saw a man loitering in the shadow.

"Are you waiting for somebody, Jock?" she asked.

Marshall, the fisherman, turned and looked at her thoughtfully.

"Weel," he said, "they telt me Mr. Andrew's no' at home."

"Did you want to see him about the yacht?"

"It wasna' that, a'thegither."

"No?"

"Ye see, I've missed him twice and I'm for Stranraer the morn. We're gaun west to try the herring fishing."

"And you wanted to tell Mr. Johnstone something before you left? Can I give him a message when he comes back?"

Marshall hesitated.

"Weel," he said, "ye can tell him that the _Nance_ cam' up the Firth the night before he started for Edinbro'; that's a while ago, ye mind.

Last night she cam' up again, wi' the same crew; the Edinbro' man I telt him o', anither wha keeps a trawl boat doon the Colvend sh.o.r.e, and yin who has a reid mustache."

Elsie started, and then wondered whether she had betrayed her surprise.

"I'll try to remember. I suppose this is for Mr. Johnstone alone?"

"Just that," said Marshall. "I'm thinking it would be better that ye telt naebody else."

He moved off, and Elsie, looking round a moment afterward, saw that he had vanished. It was nearly dark among the trees, but she knew that she could have seen him had he kept on the road; besides, his heavy, tacketed boots would have made some noise, and she had heard nothing.

Then she saw a figure coming from the lodge and her brain acted quickly, because she recognized Staffer.

Marshall had hinted it was important that his message should be kept secret; and fishermen had good sight. He must have noticed Staffer before she did, and did not want to be seen talking to her. Then she remembered that the night before Andrew started for Edinburgh was when Williamson and the man with the red mustache had entered the house.

The stranger had come up the Firth in one of the salmon boats shortly before his visit to Appleyard, and had been there again without her seeing him.

She felt a thrill that was half apprehension and half excitement as she went on slowly. The lodge was about a hundred yards away when she met Staffer.

"There's something I want to ask you," he said. "Have you any reason to doubt the honesty of our servants?"

Elsie saw at once where his question led, and tried to nerve herself.

He was a clever man and she was young and inexperienced.

"No," she said; "I have none; and Mother's quite satisfied with them.

Why do you ask?"

"You'll remember the night Williamson arrived rather late. He lost a paper in an envelope, and it looks as if somebody in the house had picked it up."

"Have you inquired about it?" Elsie asked, remembering that it was the man with the red mustache who had dropped the envelope.

"No," Staffer said carelessly; "I didn't want to make the thing look more important than it was, and I thought the envelope might turn up."

"But it must be of some consequence, or you wouldn't bother about it now."

"That's obviously true. It has become important since we lost it. It gave us some particulars that we find we can't remember."

Staffer gave her a scrutinizing look.

"It was dropped in the house," he said slowly. "Somebody must have found it."

Elsie wondered whether he suspected her. He had seen her looking down from the landing and might not have been satisfied that she had come to see who was in the house; the men had been careful to make no noise.

Staffer frowned when she did not answer.

"If the thing doesn't turn up," he declared, "I'll dismiss everybody about the place! We can't have people round us whom it's impossible to trust."

"None of the servants found it," Elsie said with forced quietness.

"You seem strangely sure of it!"

Elsie hesitated. She could not allow innocent people to suffer for what she had done; but the matter had greater issues. Though much was dark, it was clear that she and Andrew were on one side, and Staffer and his friends on the other. Andrew could be trusted, but Staffer could not. For all that, she felt the tie of kinship and could not act treacherously to him.

"I am sure," she said slowly, "because I found the envelope myself."

Although the light was bad, she saw his face change, and she grew suddenly afraid. There was a fury in his eyes that made her quail; but he kept his self-control.

"So you were downstairs that night!"

"Yes," she said, and waited with tingling nerves, though she thought the worst was past. For a moment or two she had, perhaps, been in danger.

"What did you do with the thing?" he asked harshly. "Did you give it to Andrew Johnstone?"

"Why do you think I did that?"

Staffer saw he had blundered by hinting that the paper related to matters which might concern Andrew.

"Never mind; answer me!"

"I burned it at once, without opening it."

He looked at her as if he found this impossible to believe.

"It is quite true," she said with forced calm.