This unconventional girl had developed a decided fancy for the inventor, and while in his presence it was noticed that she became less reserved and mysterious than at other times. Steve liked Sybil, too, although she was so strong a contrast to his own beautiful sister. When she cared to be agreeable Miss Cumberford proved interesting and was, Steve thought, “good company.” Orissa observed that Sybil invariably presented the best side of her character to Steve. While he was in the hospital the girl visited him daily, and now that he had come home again she passed most of her time at the hangar.

Mr. Cumberford was greatly annoyed to learn that the Kane headquarters at Dominguez Field had been given a location in the rear of all the others, where it would be practically unnoticed. Of course this slight was attributed to Burthon’s influence with the committee of arrangements, of which he was a member. Burthon’s own hangar, on the contrary, had a very prominent position. From his man Brewster, as well as from others, Mr. Cumberford also learned that Burthon had hinted he would prevent the Kane Aircraft from taking any part in the contests.

All these things worried the Kane party, whose anxieties would have been sufficient had they not been forced to encounter the petty malice of Burthon. Sybil, silently listening to all that was said, assumed a more mysterious air than usual, and on the day previous to the opening of the great aviation meet she informed her father that she would not accompany him to Dominguez, where he was bound to attend to all final preparations. The decision surprised him, but being accustomed to his daughter’s sudden whims he made no reply and left her in their rooms at the hotel.


CHAPTER XX
UNCLE AND NIECE

When her father had gone Sybil addressed a note to Mr. Burthon which read:

“I will call upon you, at your club, for a private interview at twelve o’clock precisely. As all your future depends upon this meeting you will not fail to keep the appointment.”

She signed this message with the initials “S. C.” and Mr. Burthon, receiving it as he was about to start for Dominguez in his motor car, for the messenger had had a lively chase over town to catch him, read and reread the epistle carefully, was thoughtful a moment, and then ordered his man to drive him to the club.

“‘S. C.,’” he mused; “who on earth can it be? A woman’s handwriting, of course, crude and unformed. When women intrigue there is usually a reason for it. Better find out what’s in the wind, even at the loss of a little valuable time. That’s the safest plan.”

He reached his club at exactly twelve o’clock and heard a woman inquiring for him of the doorkeeper. He met her, bowed, and without a word led her to his own private sitting room, on the third floor. The woman—or was it a girl?—was, he observed, heavily veiled, but as soon as they were alone she removed the veil and looked at him steadfastly from a pair of dark, luminous eyes.