“I must leave the tea garden at once,” replied the countess quietly. “But I do not wish to be observed. Madame de Villiers must go with me, but I do not wish the party to break up. That would make us conspicuous.”

“Ruth and I will go with you. Don’t be worried; we will go quietly. Wait, I must speak to her.”

“Ruth,” Mollie spoke softly to her friend. “The countess wishes to go home without disturbing any one else. Shall we slip out with her, and see her home?”

“Why, of course,” answered Ruth politely, although she was somewhat mystified.

They were about to arise quietly from the table when they were interrupted. A waiter handed a note to Mr. Stuart. Mr. Stuart read it. His face turned very red.

Now, if there was one thing in particular that Robert Stuart loathed it was an anonymous letter. The message he had just received was not signed, and it read:

“Beware of the countess. She is an impostor.”

Mr. Stuart crushed the paper in his hand.

“Mr. Stuart,” said the low voice of the countess, just at this moment, “forgive my leaving so soon. But I must go at once. Mollie and Ruth are coming with me.” As the countess rose from her chair she glanced hastily at the three men at the table near them. These men had also risen. But they were not looking at the countess.

The young woman started hurriedly toward the gate. Madame de Villiers quickly followed her. So did Ruth, Mollie and Mr. Stuart.