Vincent did not get that image this time. Not in candlelight and soft, yellow fluorescence. He just saw the pupil as a black, circular lake, growing wider as the snake muscles of the iris shortened themselves fractionally.

The biot was 400 microns—less than half a millimeter—long and equally tall. But the m-sub feel of it—the image a biot runner experienced—how it felt to him, made it seem to be about seven feet long and almost that tall. To the twitcher it felt like something the size of a large SUV.

In mack it was the size of a healthy dust mite. But when you’re a dust mite, you don’t feel tiny. You feel big.

As the eyelid reached its apogee, V2 jumped off. The biot landed on the milky sea, then flattened itself down as the eyelid zoomed away, hesitated, then came sweeping back overhead like a gooey pink blanket.

Vincent thought, Light, and Lo! There was light. Twin phosphorescing organs on the biot’s head spread ultraviolet light.

He waited for the eyelid to come back up again, ate another bite of poppadom, jabbed a single leg into the underside of the eyelid and let it pull it up and over the slick eyeball, and sipped his water.

It was quite a ride. And as Vincent watched the waiter refill his glass he felt a frisson, a sort of echo of what V2 felt, its back sliding along the slickery surface of the eyeball.

The trick with entering the brain by way of the eye was to reach the hole at the back of the bony eye socket. It was possible for a biot to cut through bone, but it was never quick or safe. It was the kind of thing that would start a firestorm of bodily defenses.

Reaching the hole—Vincent had forgotten the official name for it—was best done by circumnavigating the eyeball. In the m-sub it was a long walk. And all of it through the dragging wetness of tears and the vertiginous movements of the orb looking this way or that.

The two other paths to the brain—through the ear or the nose—had bigger difficulties. Earwax and the distinct possibility of a watery blockage in the one, and unimaginable filth in the other: pollen, mucus, all manner of microfauna and microflora.

This was better. For one thing you could, if you chose, sink a probe into the optic nerve and get some macro optics—see a bit of what the target was seeing, though it was usually very rough gray scale.

The second greatest threat to a biot was getting lost. When you were the size of a mite, the human body was the equivalent of roughly five miles from end to end. So V2 dutifully made its way around the eyeball, squeezed between membranes, became a bit disoriented, before finally reaching the optic nerve just as Vincent’s dinner was being placed before him.

And then, quite suddenly, he came across not the second greatest, but the single greatest threat to a biot.

They attacked with blazing speed, wheels spinning but still getting traction on the eyeball. He saw three of them immediately as they raced around from behind the redwood tree of the optic nerve.

Which answered the question of whether Professor Liselotte Osborne—leading expert on nanotechnology, consultant to MI5, the woman who could either push or derail the security agency’s investigation into nanotechnology—was free or infested.

Two more nanobots were behind V2.

Five to one odds. Although if he hung around for long, more would be on the way.

Who was the twitcher? Vincent watched the way the nanobots moved in. Too reckless. And platooned into two packs, mixing relatively benign spinners and fighters. Not an experienced hand. Not Bug Man. Not Burnofsky. Not even the new one, what was it she called herself? One-Up. Yeah. Not her, either. All of them could run five nanobots as individuals, rather than two platoons.

Vincent tasted the curry. Very hot.

He chewed carefully. It was important to chew thoroughly. It helped digestion, and digestion was often a problem during these long trips across multiple time zones.

And at the same time Vincent spun V2 toward the two nanobots he wasn’t supposed to have noticed.

Vincent took no pleasure in the food, but he came as close to pleasure as he ever did when he stabbed a cutter claw into the nearest nanobot, right into its comm link, and spilled nanowire.

Vincent’s phone pulsed.

Only one person could ring him and always get through.

He pulled his phone out and looked at the text. His concentration wavered, and he very nearly lost two of V2’s legs to a low scythe cut from a nanobot.

Grey & Stone confirmed dead. Sadie injured/OK.

Vincent was not good at experiencing pleasure. Unfortunately he was perfectly able to experience grief, loss, and rage.

He had set aside the first news of the crash. He had stuck it in a compartment. He was on a mission, he had to focus, and from long experience he knew not to trust news reports. Maybe Grey McLure had not been on the plane. Maybe.

This, however, came from Lear. If Lear said it, it was true.

Vincent texted back, missing a couple of letters as he jammed a sharp leg into the vulnerable leg joint of the second nanobot and watched it crumple.

But more nanobots were coming. A new platoon of six.

Tgt LO infst. Engaged. Withdrfing.

If he had two biots in this, he might fight this battle and win. With three he’d be confident. But this was a losing fight.

A follow-up text from Lear: Carthage.

Vincent stared at the word. No, no, no. This was not his thing. This was not what he did.

A beam weapon cut one of his six legs. The cut didn’t go all the way through, but it snapped off. It wouldn’t slow him much, but it would throw off the biot’s equilibrium.

This was not the time to stay and play smack-the-nanobot and maybe lose. It was time for extraction, and as quickly as possible.