Grant joined him. ‘So who do you want to play your character in the movie?’

Prabir cringed. ‘Did I really suggest going for the movie rights? I thought I must have dreamt that part. Can’t you just bring out a cologne, like the physicists do?’

‘Only because they have nothing worth filming. And I think they make more from donor gametes.’ She eyed him appraisingly. ‘One of the Kapoor brothers might just be dashing enough.’

‘That’s very flattering, but I doubt that any of them would be willing to take the role.’

Grant laughed, baffled. ‘Why on Earth not?’

‘Never mind. What about you?’

‘Oh, Lara Croft, definitely.’

She’d brought a pair of binoculars; she lifted them to the horizon. After a few seconds she announced, ‘I can see it now. Do you want a look?’

Prabir’s throat filled with acid. He still wasn’t ready. But everyone went back: to battlefields, to death camps, to places ten thousand times worse than this. Subhi to his lost village, no doubt. Every piece of land, every stretch of sea, was a graveyard to someone. He wasn’t special.

He took the binoculars and turned his head until the red azimuth needle was centred; the autopilot was providing the correct bearing. At first the image was nothing but a dark triangular smudge, blurred by turbulence. Then the processing chip recalibrated its atmospheric model and the scene leapt into focus: a cone of black igneous rock rising above the forest canopy. The distortion of the lowest light paths was impossible to correct; the image broke down into blobs of grey and green before the sea blocked the view completely.

He said, ‘That’s the place.’

We’re going to the island of butterflies.

11

Prabir was hoping that they’d find a previously undetected passage through the reef, but as they inched their way around the island watching the sonar display, the chance of that diminished, then vanished altogether. The old southern approach was narrow, and twenty years before no one would have attempted to pass through it in such a large craft, but the autopilot confidently declared that there was sufficient clearance.

They dropped anchor just inside the reef. It was too late to go ashore, with less than an hour of light remaining. The beach appeared smaller than Prabir remembered it, though whether the jungle had encroached, a storm had gouged sand away, or he was just misjudging the tide it was impossible to say. There were still coconut palms standing at the edge of the sand, but he could see the strange thorned shrubs choking out everything else in the undergrowth. There was no sign at all of the path that had once led from the beach to the kampung.

After they’d eaten, Grant made her nightly call home. Prabir sat out on deck, stupefied by the heat. He couldn’t call Felix; he didn’t want to be forced to justify what he’d done to Madhusree, let alone risk some kind of mediated confrontation if the two of them had been in contact.

He lay down and tried to sleep.

Just after midnight, he heard Grant come out on deck. She stood beside him. ‘Prabir? Are you still awake?’

As he rolled over, he saw her gazing down at him with the kind of unguarded fascination that he’d learnt never to betray on his own face by the time he was about fifteen. But then her eyes shifted to a neutral point behind his shoulder, and he doubted the significance of whatever he’d seen.

‘I just thought you ought to know that your extortion has borne its first fruit.’ She handed him her notepad. He glanced at the banner at the top of the page, then sat up cross-legged on his sleeping bag and read through the whole thing.

A molecular modelling team in São Paulo had examined the sequence data from the two expeditions, and identified a novel gene common to all the altered organisms; they’d sent Grant a copy of their results, as well as submitting them to a refereed netzine. Preliminary models of the protein the gene encoded suggested that it would bind to DNA.

Prabir said, ‘You think this is it? Your mythical gene-repair-and-resurrection machine?’

‘Maybe.’ Grant seemed pleased, but she was a long way from claiming victory. ‘Part of what they’ve found makes sense: this gene has a promoter that causes it to be switched on in meiosis—germ cell formation—which explains why there’s no need for a mutagen to activate it in these organisms. But there’s no evidence of a similar gene in any of the original genomes, let alone one that would only be switched on when it was needed to repair mutations.’

Prabir thought it over. ‘Could we be seeing the gene that the original version resurrected in place of itself? Once it went hyperactive, it not only substituted old versions of other genes, it substituted a completely unrecognisable version of itself?’

Grant laughed, through gritted teeth. ‘That’s possible, and it would make things very tricky. These modelling people might be able to determine the current protein’s function, but I wouldn’t count on them to be able to work backwards and determine the structure of an unknown protein that changed its own sequence into the current one. What we really need is DNA from two consecutive generations of the same organism, for comparison.’ She hesitated. ‘And if possible, DNA from two early consecutive generations of the butterflies.’

Prabir said, ‘You mean samples my parents took? They didn’t have your magic gelling agent. And I think the refrigeration would have failed by now.’

Grant looked uncomfortable, unsure whether to pursue the matter.

‘It’s OK,’ he said. ‘I don’t mind talking about this.’ They’d come here for the butterflies; he couldn’t afford to clam up every time the subject was raised.

She said, ‘They might have preserved whole specimens for storage under tropical conditions; there were treatments available twenty years ago that would have protected against bacteria and mould, without damaging the DNA. You said they bred the butterflies in captivity. One or two well-documented samples could tell us a lot.’

‘I appreciate that. But don’t get your hopes up. With all the vegetation changed and the old paths gone, I’m not even sure that I could find my way back to the kampung. And if I can, who knows what state the buildings would be in?’

Grant nodded. ‘Yeah. It was just a thought. We’ll go ashore tomorrow, and we’ll find what we find.’ She stood up. ‘And we’d both better get some sleep now.’

Prabir woke badly, to another Tanimbar dawn. When he opened his eyes there was a message in the sunlight: His parents were dead. Everyone alive would follow them. The world he’d once seen as safe and solid—a vast, intricately beautiful maze that he could explore from end to end, without risk, without punishment—had proved itself to be a sheer cliff face, to which he’d cling for a moment before falling.

He rose from the deck and stood by the guard rail, shielding his eyes. He was tired of the pendulum swings, tired of finding that all the carefully reasoned arguments and deliberate optimism that shored him up well enough, on the good days, could still count for nothing when he needed it the most.

But this could be the last cycle, the downswing deep enough to carry him through to the other side. Wasn’t this the day he’d step ashore and demonstrate once and for all that Teranesia was powerless to harm him, like an IRA debunker striding triumphantly across a bed of hot coals? He might yet return to Toronto at peace, as infuriatingly tranquil as Felix, free of his parents, free of Madhusree, every useless fear banished, every obligation to his past, real or imagined, finally discharged.

And he’d told Grant not to set her hopes too high.

They brought the boat closer to shore, then waded on to the beach. Grant was carrying a rifle now, as well as the tranquilliser gun. They went through the rituals of the insect repellent and the mine detector tests. As Prabir sat pulling his boots on, looking back at the reef, he pictured a water man rising from the waves, angry and ravenous, teeth shining like glassy steel. Then he punctured the illusion, scattering the figure into random spray. That was the trouble with the demons dreamed up by children and religions: you made the rules, and they obeyed them. It wasn’t much of a rehearsal for life. Once you started believing that any real danger in the world worked that way, you were lost.