She broke off to stare out of the window.

“Of course,” she said in a changed tone. “Surely, I’ll be glad to go.”

“Danby Force,” she thought as she left the room. “He must have requested that I come with the party. I wonder if it has anything to do with the dark lady. Wonder if he’s found her, wants me to identify her, or—or something.

“Anyway,” she concluded, “he’s a fine young man. It will be a real adventure to visit his city.”

Then, as if Fate had whispered some word of warning in her ear, she made her way slowly toward a certain hangar.

Arrived at the hangar she sought out a certain airplane, then called:

“Jerry! Oh Jerry! Come here!”

“At your service!” said Jerry, a bright young mechanic, grinning broadly as he extended a greasy hand.

“Thanks, Jerry.” The girl gripped his hand.

“Jerry,” she said, “have you time to look over this motor a bit?”