"None, sir."

"All the others--"

"You are different." The Master set hands on his hips, and coldly
studied this strange figure. "The others have had their orders
carefully worked out for them, prepared, synchronized. You have come,
so to speak, as an extemporization, an auxiliary; you will add one
more unit to the flyers in the expedition, of which there are nine
aces, including Major Bohannan here. The others are now on their
way to their lodgings, to study their instructions, to memorize, and
prepare to carry them out. You are to remain here, with Major Bohannan
and with me."

"Until what time, sir?"

"Until we start. You will be under continual surveillance. If you
make any attempt to communicate in any way with anyone outside my
apartment, it will be the last thing you will ever do. You will
receive no other warning. Tomorrow night you will accompany us. Till
then, you remain my--guest."

The aviator nodded.

"Very well, sir," he accepted. "But, my machine?"

"I will attend to your machine."

"I should hate to leave it there on the roof."