Tom set off, keeping his eyes firmly on the snow-covered trench he was crawling through. This was insane. There was nowhere on the roof Joe could be hiding. The other three bell towers were empty, you could see that from the ground. You could see the sky right through them. They were heading for the one on the northeastern corner, the one that always seemed to be in shadow because the sun couldn’t reach it. He could see it over Ebba’s shoulder, empty as a selection-box on Boxing Day. He could see stars shining through the gaps between the columns, he could see the movement of clouds, he could see the silver ball of the full moon.

But the moon was behind him.

Evi didn’t have to guess for long. ‘Who’s her father?’ she asked. ‘Is it your father? Is it Sinclair?’

Jenny’s face twisted. ‘Keep going,’ she said.

Evi thought quickly. She knew so little about the Renshaws, only what Harry and the Fletchers had told her. She wasn’t aware of any brothers, just the father: a tall, white-haired, very distinguished looking man, and the…

‘Not your grandfather?’ she said in a low voice, terrified she might have got it wrong, knowing, from the look on the other woman’s face, that she hadn’t. ‘But he’s…’ How old was Tobias Renshaw? He had to be in his eighties.

‘He was in his late sixties when Heather was born. Well into his stride by then.’

‘Your poor sister. What do you mean, well into his stride?’

Jenny’s eyes remained fixed on Evi’s. She said nothing.

‘He abused you too, didn’t he?’ said Evi.

Nothing, just a blank stare.

‘I’m so sorry,’ said Evi.

Nothing.

‘How old were you? When it started?’

Jenny gave a deep sigh and then stepped backwards until she came up against the dining-room door. Evi felt as if she could breathe again. ‘Three. Maybe four. I can’t really remember,’ Jenny was saying. ‘There was no time in my childhood when I didn’t know what it was like to be poked and prodded and fiddled with by big, rough hands.’ She turned to look directly at Evi. ‘He used to stand in my bedroom doorway and watch me get dressed,’ she said. ‘He’d come in while I was having a bath and wash me. I’ve never been in charge of my own body, never. Can you imagine what that’s like?’

‘No,’ said Evi truthfully. ‘I’m so sorry. Did he rape you?’

‘At that age? No, he was too clever for that. You rape a four-year-old, someone will spot it. He used to masturbate over me, touching me with one hand, pulling on his, you know, with the other. When I got a bit bigger he made me suck him. I was ten when the rape started. In a way I was surprised it took him so long. I heard him, you see, with Christiana. I knew what was coming.’

Evi’s hands were at her mouth. She was going to fall. She reached out and grabbed hold of the banister again. ‘I’m so sorry,’ she said. ‘Why didn’t you tell someone? Your parents, your mother, surely she wouldn’t…’ She stopped. Jenny didn’t need to answer. Children didn’t tell. They were told not to and they didn’t. Children did what adults told them to do.

‘Did he threaten you?’ she asked.

Jenny was coming towards her again. She’d been drinking, Evi noticed now. ‘He did more than threaten us,’ she said. ‘He locked us in the mausoleum, with all the stone coffins. Even after my mother was laid to rest there, he’d lock us in. Or he’d carry us up to the top of the stairs, to the gallery in the church, even up to the Tor, and dangle us off the edge. By one ankle sometimes. We had to be good, he’d say, or he’d let go. I know he used to do it to Christiana too; she’s petrified of heights.’

Evi tried to blink away the picture in her head. ‘You must have been terrified,’ she said.

‘I never screamed, Evi, there was no point. I’d just close my eyes and wonder if this was the time, this was the day when he’d let go and I’d feel that rush of air and know it was over.’

She’d been wrong. Evi had accused Gillian and she’d been wrong. She’d sent Harry and Gareth off on a wild-goose chase and now Gillian could be dying, Joe and Tom were missing and Alice – where was Alice?

‘Jenny,’ said Evi, ‘has your grandfather been killing the children? Does he have Joe?’

Pull up the chain. No need to think about anything else. Pull up the chain and pray to the God who’d abandoned him that there was nothing on the other end of it. Don’t look at Gareth, who was close to losing it, could have lost it already. The only really sensible thing was to get the two of them out of there, before one of them got killed, except Harry knew he’d never do it. So pull up the chain, because they’d come this far and now they had to know.

The chain was moving, coming up with each heaving armful, but there was something heavy on the other end. Pull with his right arm, ease it over the edge with the left, don’t think, just keep going. Something was scraping against the side of the walls, something was catching, making it harder to pull up, something was getting closer.

The muscles in Harry’s arms were screaming at him and still he had no idea how much more of the chain there was to come up. Twenty more tugs and he’d have to rest. Wasn’t sure he’d make it to twenty. Ten more, seven more… no more needed. Clipped on to the end of the chain was a large canvas bag with a heavy, old-fashioned zip. Without stopping to think or rest, Harry pulled it up on to the stone floor of the hut, reached out and pulled open the zip.

Eye sockets – empty – were the first things he saw.

Tom blinked. Snow was blowing in his eyes and he really couldn’t see that well. He was definitely looking at the moon, shining through the stonework of the north-east bell tower. He risked turning his head around. The moon was over his shoulder. Two moons? Ebba was nearing the tower now. She scampered up to one side of it and looked back, waiting for him. What was she thinking of? The helicopter had passed overhead several times that day. The small roofs on the top of the bell towers would have stopped the helicopter crew seeing inside the towers themselves, but the choppers had heat-seeking equipment, they would have spotted a warm body. Ebba was beckoning him forward.

The church had been full of people. When the helicopter started its search, the police had brought everyone off the moors and they’d all gone into the church. Nearly two hundred people had been inside when the helicopter was searching. Two hundred warm bodies. Where do you hide a needle? In a haystack. Tom was close enough now to touch the bell tower, to put his hand through the stone pillars that sat at each corner. He reached out and saw the reflection of his hand coming towards him, saw his own face in the mirror-tiles that sat between the stone pillars of the tower, to create a small box on the roof of the church, just large enough to take…

‘Shall I tell you the worst thing, Evi? The worst thing he did to us?’

‘What?’ said Evi, thinking that she really, really didn’t want to know. When was the last time she’d heard Alice calling? Shouldn’t the police be here by now?

‘We have an old well up on the moor. There used to be a water mill there and some cottages for the workers. The buildings are all gone, but the well was never filled in for some reason. We built a stone hut around it to keep it safe. Safe from sheep and stray children. Not safe for us though, not Christiana and me, because he rigged up a harness and a rope, and if we were difficult, if we dared to say no or if we didn’t suck quite as hard as he wanted us to, he’d put us down the well. He’d fasten us in the harness and lower us down. Leave us there, in the dark, for hours. He did it to other children too. Until he left one down there too long and that little game had to come to an end.’

Jenny was too close, Evi had no choice but to step backwards, up the stairs. The minute she did so, Jenny followed her.