Who Came In
The detective turned to the two officers lounging outside the door. "Have you seen anyone come through this door since President Ellsworth left?" he asked them.
They shook their heads. "No one in or out since then."
Wade looked from Grantham to Carton and Burns for a moment, then handed the envelope to the former. The physicist tore it open and read silently the single sheet enclosed, then read aloud to the others.
My dear Dr. Grantham:
It has amused me very much to hear your conversation with these worthy officers, but I really must be going. (You really should offer chairs to your guests, whether visible or invisible). I am obliged to you for developing the projector which now makes me invisible, but I warn you that any attempt on your part to regain it or to capture me will end disastrously for you. I am the Invisible Master, and I begin now my reign of this city. My rule of it will become evident to all in it soon, for in it from now onward my will shall be supreme.
The Invisible Master.
CHAPTER III