Miss Percival seemed to hesitate for a moment, then she spoke. "It depends a good deal on the manager I think. And in the B depots the wages and hours are different."

"What are the B depots?" Mary was alert to increase her knowledge.

"They're in poor neighbourhoods and open for supper as well. The girls work short hours one day and long the next and have lower wages, 10s. instead of 11s. They get off at five on short days but the work's harder."

Mary smiled at Miss Percival. "You must have studied the subject!" She was pleased to recognise such zeal and initiative.

Miss Percival looked at the note-book that she held in her lap. "Yes," she said, "I was investigating it some time ago—I've worked in two or three tea-shops myself. It's the only way of telling what the life is really like."

Mary looked at her. This was most interesting! "But how useful—" she began, then she checked herself. It would be better, perhaps, if she did not, at any rate for the present, accept information from Miss Percival. A friend of Rosemary's, she was certain to have theories about what she had seen. And James would rather, Mary felt sure, that his wife formed her own ideas from her own experience. She had better not even ask the secretary whether one of the shops she had worked in had been the Imperial's. Then she herself could not be biassed by Miss Percival's chance remarks. "It must have been very exciting," she finished kindly.

Miss Percival did not seem stirred by the memories of its excitements. "It was interesting," she said, and they talked of indifferent subjects for the rest of the drive.

When Mrs. Heyham, hearing voices, looked into the drawing-room on her way upstairs, she found Laura and Rosemary sitting over the fire. They jumped up. "Here she is!" Laura called to her. "Well, mother darling, I should love to think that you've unearthed a perfect hive of scandals! But I don't really believe that your mind is suspicious enough!"

Mary stood by the door for a moment smiling at them. "I am so glad you've come, my dear," she said; "I have some letters to write that will take a quarter of an hour, but if you can wait, Laura, I will come down and have another tea."

"But that's what I'm here for, darling, tea with you!" Laura blew a kiss to her mother before the door shut behind her. Then the two girls went back to their chairs. "She isn't suspicious enough—if there's anything to find out!" Laura added.