s, and two days later they almost threaten us with
suit if we don't stop publishing it."

"It is perplexing," said Craig, with the air of one who was not a bit
perplexed, but rather enlightened.

He pulled down the district telegraph messenger lever three times, and
we sat in silence for a while.

"However," he resumed, "I shall be ready for them to-night."

I said nothing. Several minutes elapsed. Then the messenger rapped on
the door.

"I want these two notes delivered right away," said Craig to the boy;
"here's a quarter for you. Now mind you don't get interested in a
detective story and forget the notes. If you are back here quickly with
the receipts I'll give you another quarter. Now scurry along."

Then, after the boy had gone, he said casually to me: "Two notes to
Close and Gregory, asking them to be present with their attorneys
to-night. Close will bring Lawrence, and Gregory will bring a young
lawyer named Asche, a very clever fellow. The notes are so worded that
they can hardly refuse the invitation."

Meanwhile I carried out an assignment for the Star, and telephoned my
story in so as to be sure of being with Craig at the crucial moment. For
I was thoroughly curious about his next move in the game. I found
him still in his laboratory attaching two coils of thin wire to the
connections on the outside of a queer-looking little black box.

"What's that" I asked, eyeing the sinister looking little box
suspiciously. "An infernal machine? You're not going to blow the culprit
into eternity, I hope."

"Never mind what it is, Walter. You'll find that out in due time. It may
or it may not be an infernal machine of a different sort than any you
have probably ever heard of. The less you know now the less likely you
are to give anything away by a look or an act. Come now, make yourself
useful as well as ornamental. Take these wires and lay them in the
cracks of the floor, and be careful not to let them show. A little dust
over them will conceal them beautifully."

Craig now placed the black box back of one of the chairs well down
toward the floor, where it could hardly have been perceived unless one
were suspecting something of the sort. While he was doing so I ran the
wires across the floor, and around the edge of the room to the door.

"There," he said, taking the wires from me. "Now I'll complete the job
by carrying them into the next room. And while I'm doing it, go over the
wires again and make sure they