The old lady said, “He wanted to know why some web sites can’t be found. Which was fundamentally a question about search engines. His image of the swimming pool became useful. He imagined millions of tennis balls, some bobbing up on the water, some trapped deeper down by the weight of the others. So I asked him to imagine a search engine as a long silk ribbon, being pulled up and down and in and out, weaving through the balls every which way, sliding over their wet fuzzy surfaces at tremendous speed. And then to imagine that some balls had been adapted, to have spikes instead of fuzz, like fish hooks, and that other balls had been adapted to have no fuzz at all, to be completely smooth, like billiard balls. Where would the silk ribbon snag? On the spikes, of course. It would slide over the billiard balls completely. That’s what Peter needed to understand about search engines. It’s a two-way street. A web site must want to be found. It must work hard to develop effective spikes. People call it search engine optimization. It’s a very important discipline now. That said, it’s equally hard work to be a billiard ball. Staying secret isn’t easy either.”
Chang said, “Secret web sites imply illegality.”
“Indeed,” the old lady said. “Or immorality, I suppose. Or both at once. I’m naïve about such things, but one imagines pornography of the most unpleasant sort, or mail-order cocaine, and so forth. It’s called the Deep Web. All those smooth billiard balls. Millions of them. No spikes, no hooks, nothing but going about their business with no one watching. The Deep Web might be ten times bigger than the Surface Web. Or a hundred. Or more. No one knows. How could they? Not to be confused with the Dark Web, of course, which is merely out-of-date sites with broken links, like dead satellites whirling through space forever. Which makes the Dark Web more like ancient archaeology, and the Deep Web more like the wrong side of the tracks. Not that either one is actually dark or deep or either side of any actual tracks, you understand. The internet is not a physical place. There are no physical characteristics to it at all.”
On the TV screen an ambulance rolled into the overhead shot, slowly over the grass, lights flashing forlornly, being followed by what looked like a coroner’s wagon. People got out, and joined the cops.
Chang asked, “So how can a person find secret web sites?”
“A person can’t,” the old lady said. “Not from the outside, anyway. You can’t use a search engine, because the sites are smooth. You need the exact address. Not just CoffeeShop.com, but something like CoffeeShop123xyz.com. Or much worse, of course, in reality. A unique resource locator combined with a super-secure password, all rolled into one. Apparently such addresses circulate through certain communities by word of mouth.”
On the TV screen a dark blue Crown Vic bumped over the grass and parked. Two men in suits climbed out. Detectives, presumably. The ticker changed to
He asked, “Did McCann tell you what kind of a web site he was looking for?”
The old lady said, “No.”
On the screen men squatted by the black-clad figure on the grass. Detectives and the medical examiner, Reacher supposed. He knew the drill. He had squatted by horizontal figures many times. Some had been alive. This one wasn’t, he knew. There was no urgency. No hustle. No shouting voices. No backboards, no IV lines, no breathing tubes, no chest compressions.
The old lady said, “That’s Peter, isn’t it? Why else would you be asking me about him? Why else would the FBI be interested in me?”
Chang didn’t answer either question, and Reacher said nothing, because as the old lady spoke the TV picture changed. To a house. An undistinguished brownstone, on an undistinguished street. Peter McCann’s brownstone. The old lady’s house. Where they had been, moments before. It was recognizable. It was familiar. The front of it was all lit up by flashing red lights. Cops were running up the stoop.
Much too soon for a connection to have been made. The cops in the park hadn’t even looked in McCann’s pockets yet. They hadn’t found a wallet, hadn’t checked the driver’s license, didn’t know who he was, and didn’t know where he lived. They were still waiting for the all-clear from the medical examiner. Reacher knew how it worked. He had sat back on his heels many times, just waiting. Death had to be pronounced, before the body became evidence.
Not yet connected. A separate investigation. The ticker changed to
Reacher turned back to the old lady and asked, “Did you call 911?”
The old lady said, “Yes, I did.”
“When?”
“As soon as I closed my door on you.”
“Why?”
“I didn’t like the look of you.”
“Neither one of us?”