He said, 'Does this tie in with your theory of nodule formation?'

'It ties in perfectly. If these eruptions have been happening once every, say, twenty years, for the last hundred thousand years, that's a hell of a lot of material being pumped into the sea. The percentage of metals would be minute, but that doesn't matter. The process of nodule formation takes care of that – what metals there are would be scavenged and concentrated, ready to be picked up.'

Campbell looked baffled. 'You come up with the damndest things,' he complained. 'First a reef that might or might not be there, and now a goddam disappearing island. What's the present state of this freak?'

I looked at Geordie.

'I don't know. I'll check up in the Pilot supplements – but they're often printed a little behind the times anyway. The locals may know.'

'Where is Falcon or Fonua-whatsit – when it's available?'

'In the Friendly Islands,' I said. Clare smiled at that. The Tongan group. It's about forty miles north of Tongatapu, the main island.'

He frowned. 'That's a long way from Rabaul, and that's where the Suarez-Navarro crowd is. And it's a long way from here, where Mark was.'

I said mildly, 'It's halfway between.'

He nodded thoughtfully and we all chewed on it for a few minutes. After a while I spoke up. 'In the light of this information, I think it would be worth concentrating on Falcon – if you're carrying on, that is?' I looked enquiringly at Campbell.

'Yes, of course I am,' he said energetically. His optimistic side was gaining steadily. 'You really think this will be worth trying?'

Clare supported me. 'I was sure those drawings meant something.'

'Minerva meant two months of wasted time,' Campbell said. 'What do you think, Geordie?'

Geordie looked at me but with conviction. 'He's the expert.'

Ian Lewis waited with courteous patience. He was prepared to go anywhere, and do anything that was wanted of him. In spite of the horror of Tanakabu he was having a wonderful time, away from the dullness of home life.

The issue was settled for us while Campbell ruminated. A vagrant breeze from the open port flipped back a page or so of the Pilot and I happened to glance down. I looked at the page incredulously and began to laugh uncontrollably.

Campbell said, 'For God's sake, what's so funny?'

I dumped the book into Geordie's hands and he too began laughing. I said, 'It seems we looked at the wrong Minerva. Look – Minerva Reefs, two hundred and sixty miles southwest of Tongatapu – that puts them only about three hundred miles from Falcon Island.'

'You mean there's another Minerva?'

'That's exactly what I mean.'

Geordie handed him the book. They're fully mapped. They're on a plateau twenty-eight miles long. It's hard ground – shell, coral and volcanic cinders, at a depth of eighteen hundred to thirty-six hundred feet.'

'Just like Falcon Island but much, much older and well established,' I put in.

'There's no mention of nodules,' Campbell said.

These are naval records and the navy wouldn't dredge for them. They'd just take soundings using a waxed weight to sample the bottom material. A nodule – even a small one -would be too heavy to stick to the wax.'

There was a rising air of jubilation in the small cabin.

Campbell said, 'Well, that does it, I suppose. We go to Tonga.' He looked at us all fiercely. 'But this time there'd better be no mistakes.'

So it was settled what we'd do after we left Papeete – if we left Papeete.* 6*

It seemed a long time.

Apparently a patrol boat had gone to Tanakabu and returned three days later, during which time things had got a little easier for us, but not much. All the crew members had been allowed to go ashore in batches, but Ian, the Campbells and I were still confined, as was Geordie for slightly different reasons. Paula managed to be allowed ashore mainly because she seemed to know everyone, including the policemen, but she only went under Jim or Taffy's escort and didn't stay ashore for long, having little faith in Hadley's having truly disappeared.

On the fourth day we were taken ashore, Campbell and I, and driven to the police station where we were ushered into the same office as before. M. Chamant was awaiting us.

He was quite pleasant. 'Our findings on Tanakabu are consistent with your statements. I note that M. Trevelyan called off the search as soon as he found that the man Kane was armed, which is a point in your favour. I also found that you saved many lives at the hospital, and it is known that you were all aboard your ship when the doctor was shot and the fires started. Also your photographs were helpful.'

It was good news, and as near to an apology as we'd ever get.

'When can we leave?' asked Campbell.

Chamant shrugged. 'We cannot hold you. If we had Kane and Hadley here you would be expected to stay and give evidence at their hearing, but…'

'But you haven't found them,' I said bitterly.

'If they are in French Oceania we will find them. But the Pacific is large.'

At least they seemed convinced of Hadley and Kane's guilt, which would have come out sooner or later anyway. Hadley had been seen ashore and recognized by several of the people on Tanakabu, and it made me wonder all the more why they had stopped in Papeete to put the police on a false trail, instead of picking up their heels. But I thought that perhaps Hadley, whose mental processes were not as evident as his brutality, really thought that we would be found guilty of his crime, and so out of his way forever. It was impossible to try and read his mind. Now, if they were being hunted by the law themselves they would have less time to go after us, and we had already agreed to act as if they didn't exist, otherwise we'd get nowhere.

'You can go whenever you want, M. Campbell.'

'We're going west as we originally said,' Campbell told him. 'We're heading towards Tonga. If we see them out there we'll let the authorities know.' We were being cooperative now, wanting no further opposition to our going about our own business.

Chamant said, 'Very well, gentlemen. You may go. I will send instructions for the police guard to be withdrawn. But you will take care to be on your best behaviour for the remainder of your stay here, and I also strongly suggest that you leave these waters soon. Your family' He pointed to me. 'Your family seems to cause trouble here, whether or not you intend to. And we do not want trouble on our hands.'

Campbell closed a hand firmly over my wrist. 'Thank you, M. Chamant. We appreciate all you have said. And now can you arrange transport back to our ship, please?'

He was reluctant on general principles but finally we got a ride back to the docks and a short run out to Esmerelda, to carry back the welcome news of our release. Everyone de served a couple of days off, and neither Campbell nor I begrudged them the time. The radio had been repaired and we had a lot of planning to do before we could set sail for the Friendly Islands, one of which might be there, or might not.*