The nice thing about an all-metal room is that it's impossible to hide a self-contained bug in it that will be of any use. A small, concealed broadcaster can't broadcast any farther than the walls, so any bug has to have wires leading out of the room.
I didn't find a thing. Either Ravenhurst kept the room clean or somebody was using more sophisticated bugs than any I knew about. I opened the traveling case again and took out one of my favorite gadgets. It's a simple thing, really: a noise generator. But the noise it generates is non-random noise. Against a background of "white," purely random noise, it is possible to pick out a conversation, even if the conversation is below the noise level, simply because conversation is patterned. But this little generator of mine was non-random. It was the multiple recording of ten thousand different conversations, all meaningless, against a background of "white" noise. Try that one on your differential analyzers.
By the time I got through, nobody could tap a dialogue in that room, barring, as I said, bugs more sophisticated than any the United Nations knew about.
Then I went over and tapped on the communicating door between my room and Jack Ravenhurst's. There was no answer.
I said, "Jack, I'm coming in. I have a key."
She said, "Go away. I'm not dressed. I'm going to bed."
"Grab something quick," I told her. "I'm coming in."
She was no more dressed for bed than I was, unless she made a habit of sleeping in her best evening togs. Anger blazed in her eyes for a second, then that faded, and she tried to look all sweetness and light.
"I was trying on some new clothes," she said innocently.
A lot of people might have believed her. The emotional field she threw out, encouraging utter belief in her every word, was as powerful as any I'd ever felt. I just let it wash past me and said: "Come into my room for a few minutes, Jack; I want to talk to you."
I didn't put any particular emphasis into it. I don't have to. She came.
Once we were both inside my shielded room with the walls vibrating with ten thousand voices and a hush area in the center, I said patiently, "Jack, I personally don't care where you go or what you do. Tomorrow, you can do your vanishing act and have yourself a ball, for all I care. But there are certain things that have to be done first. Now, sit down and listen."