Grace shook her head. ‘I would have seen it that evening, I’m sure of it …’ Unless he found out the day he disappeared, while she was out shopping. If he had discovered anything in the library, he could have made some follow-up enquiries that afternoon. Was that what his note was about? Had his emotions overtaken him once he’d written it?

Why didn’t you tell me what you were doing, Adam?

She bit her lip to stem her distress.

Niall patted her shoulder. ‘I’m sorry, Grace. Come down to the station tomorrow, eh, and tell them what you’ve found over Christmas. Take it from there.’

‘I don’t think I can,’ she admitted. ‘I’ve had a bit of a change of heart about living in the cottage. I’m planning to leave later today.’

‘Well, give Barton a call instead, then.’

Niall obviously wasn’t convinced that she’d found anything worth investigating, or he wouldn’t be so accepting of her going. He was just being kind, she realised, helping her tie up loose ends for her own peace of mind. There was no point being here – hanging on to an empty hope. Everyone else was focused on other things. Life had moved on.

They traipsed back over the grass. Niall walked beside her, and didn’t say another word until they were next to Grace’s car.

He held her door open for her as she climbed in. As he did so, he looked up at the snow-laden sky. ‘Best get going, if you’re planning to,’ he said, the warning clear within his words. ‘It can be pretty dangerous driving on the moors with snow around – and it’ll be dark within the hour.’

It was barely three o’clock by the time Grace got back onto the main road, but Niall was right – already the daylight was beginning to fade. As she headed out of town she was slowed down by the drifting snow. She drove as quickly as she dared, trying not to be reckless.

She was only a couple of miles from the moor road turnoff when she met a queue. She sat there impatiently, eyes fixed on the blur of red lights from the car in front of her, trapped in stuffy air as the heating hit full-blast. Now and again they edged forward, but it must have taken a good twenty minutes before she reached the cause of the delay. Two cars had crashed at a junction and the accident took up one side of the road. She glanced at it as she passed, but the people involved were no longer there, only the empty shells of their badly damaged vehicles. It looked like it had been nasty, and Grace rapidly reassessed her plans. Was she doing the right thing rushing Millie away? She looked nervously at her watch. Yes, she told herself – all she had to do was pack the car and turn around when she got back. She’d persuade Ben to tow her out of the village if she had to.

She left the traffic behind as she indicated right and turned onto the empty road that cut through the moors, dismayed by the heavy grey sky. Five miles to Roseby, the sign said. As she tried to speed up, the snow became millions of tiny white specks shooting towards her windscreen from the gloom. It was mesmerising, and Grace had to focus hard to keep her eyes on the tarmac.

The minutes ticked by, and the way in front of her swiftly became a blank white nothingness. Soon she could no longer see where the roadside ended and the moors began – the only things to help her were the tall slim markers spaced every fifty metres or so, their reflective red tips lighting the way.

She was moving slower and slower, and her low spirits sank even further. She couldn’t risk bringing Millie out in this. Herself, yes, but not her daughter. They were going to have to spend another night in the cottage. She wasn’t sure she could get through it without going mad. She could sleep with the light on, but she didn’t know if she was more terrified of the shadows that crept along the walls or the obliterating dark.

Fear bred upon fear, as the storm of white outside grew stronger. The car was forced to a crawl. Grace had lost all points of reference, even the markers. She was frantic now, blinded by whiteness, desperate to reach the cottage, all thoughts of getting out again forgotten. It felt like she’d been on the moors forever – surely she should have been back by now? Perhaps she had unwittingly taken a wrong turn.

She was on the point of hysteria when a tall stone marker came into view. She stared at it, sure she had never seen it on this route before, but it looked familiar. Then she recognised it with a shock: it was the picture on the front of Connie’s book of ghosts: a stone marker with a simple cross – like a gravestone.

It loomed closer, the headlights’ illumination giving it a spectral sheen. She would be familiar with it, surely, if she were on the right road. Where the hell was she?

Transfixed, she neglected to steer, and the tyres came off the tarmac, immediately floundering as they struggled for traction on the sodden moorland. She whipped the steering wheel hard round, but the car skidded and juddered, and she had to brake sharply.

She peered through the windscreen, her fingers still clutching the wheel. Daylight had faded to nothing; night was in ascendance. She had no idea where the road was any more. She leaned against the steering wheel for a moment to stop herself from hyperventilating. When she looked up, snow pelted the car in frozen fury. Blackness surrounded her. She couldn’t even see the stone marker now.

She tentatively pressed her accelerator. The engine roared, the tyres spun, but she didn’t move.

She kept the engine running and fumbled in her pocket for her phone, willing it to have reception out here. She almost wept when the little screen lit up and showed a good signal. She had two missed calls from Ben. She hadn’t even heard it ring, but now she pressed redial rapidly, her hands shaking.

‘Grace?’ He answered immediately, sounding agitated. ‘I’ve been really worried, where are you?’

‘Ben, is Millie all right?’

‘Yes, of course, she’s fine – she’s playing. Now, where the hell are you?’

‘I’m stuck on the moor top.’ She tried and failed to keep the panic out of her voice. ‘I’ve driven off the road, but I must be close to the village – I’ve been travelling long enough. I’ve just passed a stone marker with a cross on it. What should I do? Shall I try to walk back?’

‘No,’ he said sharply. ‘Don’t leave the car, Grace. I told you, the snow can cause all sorts of trouble. Listen … I’ll come and get you. Wait there.’

He hung up, leaving her so relieved that she put her head down and finally let the dam of her emotions loose. She sobbed loudly into her hands, releasing all her pain, her frustration, her anger, and her sorrow, gulping in air until she felt spent. When she looked up again, she was resigned and ready for the long night ahead.

Now that the car had stopped moving, the snow wasn’t as fierce, but it still fell relentlessly, and it was hard to make out much else. If there really were ghosts on the moors, it would be the perfect time for them to take a walk. Her eyes flickered from side to side, searching for unexpected movement. Her ears strained to hear anything out of the ordinary. She looked in her rear-view mirror, but the stone marker had been annihilated by darkness. It had been tall enough for a man to hide behind. What if there was somebody there, just out of sight?

She put her head in her hands. What was she doing? Why was she insisting on terrorising herself?

Too afraid to look out again, she kept her eyes down, trying to hold herself together. She ran through everything that had happened since she had arrived – right through from her first memories with Adam … the night he had disappeared … coming back, and the lonely weeks since, as she had tried to figure everything out. All of which had led her to this point – lost within the fall of night, snow suffocating the world.