"Oh, I haven't forgotten that you nailed me firmly before you would say a word," Jack replied grimly. "But I still think I can persuade Sarah to confess her share and if she will, Shirley will admit that she also was present. I'll go begin my good work now."

He was gone half an hour and when he came back he was smiling.

"Everything's all fixed," he announced. "Sarah and Shirley are going to march up to the guns like good soldiers to-night, and I'm going to do the talking for them. Sarah, sensibly enough, wants to get it over before dinner, so I've promised to come over right after lunch and sit on your porch so I'll be here no matter how early Hugh gets home. You and I have to bolster up the weak spots in their courage."

"I don't see how you ever persuaded Sarah," marveled Rosemary. "I argued and argued, and she wouldn't listen to me."

Jack looked very wise.

"I used moral suasion," he declared. "Told her if she didn't own up to-night, I'd go to Doctor Hugh and tell him everything myself."

"Is that moral suasion?" asked Rosemary doubtfully.

"Of course it is," said Jack with confidence. "If it isn't it ought to be. I've never broken a promise yet and I'm mighty glad Sarah didn't make me, but I'll be jiggered if I don't think there are times when it is worse to keep a promise than to break it."

A promise "wrongly given"—Doctor Hugh's words came back to Rosemary. Had she given her promise wrongly?

Doctor Hugh did not come home till nearly five o'clock and the four solemn young people on the front porch were getting decidedly fidgety before his roadster appeared at the curb and he jumped out and hurried up the walk. He said "Hello" to the four as he passed them and he was surprised, therefore, when he turned from his desk to see them enter the office and advance toward him.