"I wish Miss Frazer had been at the bottom of the sea!" groaned Lindsay.

Merle came in rather late and took her place at table, looking a little red and self-conscious. Lindsay tried to meet her eyes, but she avoided the gaze, and went on stolidly with her bread and butter as if nothing had happened. When Cicely made a like effort she fared the same. What had Merle seen? How they longed for tea to be over, that they might hear of her discovery! They hoped she would not reveal it to any of the other girls first, and they looked on in quite a fever of anxiety whenever she spoke to Elsie Ryder or Marjorie Butler, who sat one on either side of her.

"She doesn't know what we suspect about Mrs. Wilson," whispered Lindsay. "She may be letting out something it would be far better, for Monica's sake, not to tell."

The moment the meal was finished the two girls followed Merle into the garden, but, greatly to their surprise, she took no notice of them, and began to play tennis.

"I expect she's waiting for a safer time. Of course it wouldn't do for her to be seen talking to us so particularly. We'll stay here while she finishes her set," said Cicely.

The game lasted until preparation, and then Merle walked away with such an evident intention of escaping from them that the two were most indignant.

"What does she mean?" burst out Lindsay.

"Do you think she's offended because we didn't go up at once?" returned Cicely. "She doesn't know yet that Miss Frazer stopped us. We must explain it as soon as we can."

They tried to get hold of Merle after supper, but she kept persistently to Elsie Ryder's company, and would not give them any opportunity of speaking to her in private, so they were obliged to go to bed in a horrible state of suspense. Next morning things were just as bad. There was no mistaking the fact that Merle wished to avoid them, and it was only with the greatest difficulty that they succeeded at last in catching her alone.

"What do you want?" she enquired abruptly. "Please don't go chasing me about like this all over the school."