As she left them to take her place on the court, Lt. Hulbert came over to the Carltons, bringing a stranger with him. The visitor was an exceedingly attractive man of perhaps thirty-five, perfectly dressed, obviously a person of wealth and distinction. Linda thought he might be an ambassador, or perhaps a doctor or lawyer.

“Linda,” said Tom Hulbert, “I want to present a gentleman who is very anxious to meet you, who has heard of your wonderful exploits, and who is something of a flyer himself. Miss Carlton, let me introduce Lord Dudley, of England.”

Linda blushingly held out her hand, and Tom proceeded to introduce the titled foreigner to Miss Carlton. Not knowing Amy, he did not include her, but he noticed that the man was looking at her.

“I hear your praises sung wherever I go, Miss Carlton,” Lord Dudley said, with an engaging smile. “Not only in your own country, but in England, France,—even Germany. You are a very famous person.”

“It is very kind of you to say that,” replied Linda, embarrassed as usual at the praise. “But tell me about your own flying. Have you your plane here?”

“No, it’s being repaired—I left it in England. I drove up here in a hired motor.”

“It’s too bad you haven’t your plane,” said Linda. “For we are to have a treasure hunt by airplane on Saturday.” She glanced shyly at her aunt, who was frowning. “But you can use one of Mr. Clavering’s——”

The tennis matches were to begin immediately, for Dot and Sarah were shaking hands with formality, and the umpire was mounting his stand. So Tom drew his friend away to the seats which Kitty was saving for them.

“I’ve seen that man before!” cried Amy, excitedly.

“Where? When?” demanded Linda, hopefully. Was another memory coming back?