I got up and opened the door and McMillan, with a heavy tread but no sign of the blind staggers, passed out. I stood and watched his back until the top of his head disappeared on his way downstairs. Then I turned to Wolfe and said sarcastically, "Fortune-telling and character-reading. It would be nice to have to explain-"
"Shut up."
I kicked the door further open and stood there, listen- ing for the sound of a gunshot or a racing engine or what- ever I might hear. But the first pertinent sound, within the 5 minutes he had mentioned, was his returning footsteps on the stairs. He came down the hall, as he had promised, on his feet, entered without glancing at me, walked to Wolfe and handed him something, and went to his chair and sat down.
"That's what I said I'd show you." He seemed more out of breath than the exertion of his trip warranted, but other- wise under control. "That's what I killed Buckingham with." He turned his eye to me. "I haven't got any pencil or paper. If you'll let me have that pad…"
Wolfe held the thing daintily with thumb and forefinger, regarding it-a large hypodermic syringe. He lifted his gaze.
"You had anthrax in this?"
"Yes. Five cubic centimeters. A culture I made myself from the tissues of Caesar's heart the morning I found him dead. They gave me hell for cutting him open, but-" He shrugged. "I did that before I got the idea of saying the carcass was Buckingham instead of Caesar. I only about half knew what I was doing that morning, but it was in my mind to use it on myself-the poison from Caesar's heart. Watch out how you handle that. It's empty now, but there might be a drop left on the needle, though I just wiped it off."
"Will anthrax kill a man?"
"Yes. How sudden depends on how he gets it. In my case collapse will come in maybe twenty minutes, because I shot more than two cubic centimeters of that concentrate in this vein." He tapped his left forearm with a finger. "Right in the vein. I only used half of it on Buckingham."
"Before you left for Crowfield Tuesday afternoon."
"Yes." McMillan looked at me again. "You'd better give me that pad and let me get started."
I got out the pad and tore off the three top sheets which contained the sketches, and handed it to him, with my fountain pen. He took it and scratched with the pen to try it, and asked Wolfe, "Do you want to dictate it?"
"No. Better in your own words. Just-it can be brief. Are you perfectly certain about the anthrax?"
"Yes. A good stockman is a jack of all trades."