"The what?"

"The demo. Didn't you have a demo today?"

"Oh," she said. "Oh, yes. We did. It went fine, when we finally got it going. The VCs in Germany couldn't stay for all of it because of the time change, but-listen, do you want to see it?"

"What do you mean?"

"I have a dub of it. Want to see it?"

I was surprised. I shrugged. "Okay, sure."

"I'd really like to know what you think, Jack." I detected a patronizing tone. My wife was including me in her work. Making me feel a part of her life. I watched as she opened her briefcase and took out a DVD. She stuck it in the player, and came back to sit with me on the bed.

"What were you demoing?" I said.

"The new medical imaging technology," she said. "It's really slick, if I say so myself." She snuggled up, tucking herself into my shoulder. All very cozy, just like old times. I still felt uneasy, but I put my arm around her.

"By the way," I said, "how come you take showers at night now, instead of in the morning?"

"I don't know," she said. "Do I? I guess I do. It just seems easier, honey. Mornings are so rushed, and I've been getting those conference calls from Europe, they take so much time-okay, here we go," she said, pointing to the screen. I saw black-and-white scramble, and then the image resolved.

The tape showed Julia in a large laboratory that was fitted out like an operating room. A man lay on his back on the gurney, an IV in his arm, an anesthesiologist standing by. Above the table was a round flat metal plate about six feet in diameter, which could be raised and lowered, but was now raised. There were video monitors all around. And in the foreground, peering at a monitor, was Julia. There was a video technician by her side. "This is terrible," she was saying, pointing to the monitor. "What's all the interference?"

"We think it's the air purifiers. They're causing it."

"Well, this is unacceptable."