"You, too, Mr. Jameson," she added, turning to me.

I hesitated a moment and Kennedy tried to catch my eye. I was just
about to speak when he brought his heel down sharply on my toe. I
looked at him again and caught just the trace of a nod of his
head. I saw that I was de trop.

"No, thank you," I replied. "I'm afraid I'd better not go. Really,
I have too much work staring at me. I can't get away--but it's
very kind of you to think of asking me."

We chatted, then left a few moments later so that Kennedy could
pack.

Around the corner from the laboratory, as we dashed out, had been,
as I have said, Wu Fang and Long Sin looking out from the
limousine. No sooner had we disappeared across the campus than
their driver started up the car and they sped around to our
apartment.

Cautiously they alighted and walked down the street. Then making
sure they were not observed, they entered and mounted the stairs
to our doorway. Long Sin was stationed down the hall on guard
while Wu Fang drew from his pocket a blank key, a file and a
candle. He lighted the candle and held the key in its flame until
it was covered with soot.

Then he inserted the key in the keyhole, turned it and took the
key out. Working quickly now, he examined the key sharply. In the