‘Ten minutes?’

‘Okay.’ He nodded, almost to himself. ‘Ten minutes is okay.’ He said it again, and his face was weirdly shiny. ‘Ten minutes is doable.’

Nicky had his ear-buds in and was listening to music. Tanzie was stroking Norman’s big soft ears and thinking about string theory. And then suddenly Mr Nicholls swerved the car abruptly into a lay-by. Everyone lurched forward. Norman nearly rolled off the seat. Mr Nicholls threw open the driver’s door, ran round the back, and as she turned in her seat, he crouched down by a ditch, one hand braced on his knee, and began heaving. It was impossible not to hear him, even with the windows closed.

They all stared.

‘Whoa,’ said Nicky. ‘That’s a lot of stuff coming out of him. That’s like … whoa, that’s like the Alien.’

‘Oh, my God,’ said Mum.

‘It’s disgusting,’ Tanzie said, peering over the back shelf.

‘Quick,’ said Mum. ‘Where’s that kitchen roll, Nicky?’

They watched as she got out of the car and went to help him. He was doubled over, like his stomach was really hurting. When she saw Tanzie and Nicky were staring out of the back window, she flicked her hand like they shouldn’t look, even though she had been doing the exact same thing.

‘Still want a kebab?’ Tanzie said to Nicky.

‘You’re an evil sprite,’ he said, and shuddered.

Mr Nicholls walked back to the car like someone who’d only just learnt how to do it. His face had gone this weird pale yellow. His skin was dusted with tiny beads of sweat.

‘You look awful,’ Tanzie told him.

He eased himself back into his seat. ‘I’ll be fine,’ he whispered. ‘Should be fine now.’

Mum reached back through the seats and mouthed, ‘Plastic bag.’ Tanzie handed over hers. ‘Just in case,’ she said cheerfully, and opened her window a bit.

Mr Nicholls drove really slowly for the next few miles. So slowly that two cars kept flashing them from behind and one driver sat on his horn really angrily as he passed. Sometimes he veered a bit across the white line, like he wasn’t really concentrating, but Tanzie registered Mum’s determined silence and decided not to say anything.

‘How long now?’ Mr Nicholls kept muttering.

‘Not long,’ said Mum, even though she probably had no idea. She patted his arm, like he was a child. ‘You’re doing really well.’

When he looked at her, his eyes were anguished.

‘Hang on in there,’ she said quietly, and it was like an instruction.

And then, about half a mile further along, ‘Oh, God,’ he said, and slammed the brakes on again. ‘I need to –’

‘Pub!’ Mum yelled, and pointed towards one, its light just visible on the outskirts of the next village. ‘Look! You can make it!’

Mr Nicholls’s foot went down on the accelerator so that Tanzie’s cheeks were pulled back in G-force. He skidded into the car park, threw the door open, staggered out and hurled himself inside.

They sat there, waiting. The car was so quiet that they could hear the engine ticking.

After five minutes, Mum leant across and pulled his door shut to keep the chill out. She looked back and smiled at them. ‘How was that Aero?’

‘Nice.’

‘I like Aeros too.’

Nicky, his eyes closed, nodded to the music.

A man pulled into the car park with a woman wearing a high ponytail and looked hard at the car. Mum smiled. The woman did not smile back.

Ten minutes went by.

‘Shall I go and get him?’ said Nicky, pulling his ear-buds from his ears and peering at the clock.

‘Best not,’ said Mum. Her foot had started tapping.

Another ten minutes passed. Finally, when Tanzie had taken Norman for a walk around the car park and Mum had done some stretches on the back of the car because she said she was bent out of shape, Mr Nicholls emerged.

He looked whiter than anyone Tanzie had ever seen, like paper. He looked like someone had rubbed at his features with a cheap eraser.

‘I think we might need to stop here for a bit,’ he said.

‘In the pub?’

‘Not the pub,’ he said, glancing behind him. ‘Definitely not the pub. Maybe … maybe somewhere a few miles away.’

‘Do you want me to drive?’ Mum said.

‘No,’ everyone said at once, and she smiled and tried to look like she wasn’t offended.

The Bluebell Haven was the only place within ten miles that wasn’t fully booked. It had eighteen static caravans, a playground with two swings and a sandpit, and a sign that said ‘No Dogs’.

Mr Nicholls let his face drop against the steering-wheel. ‘We’ll find somewhere else.’ He winced and doubled over. ‘Just give me a minute.’

‘No need.’

‘You said you can’t leave the dog in the car.’

‘We won’t leave him in the car. Tanzie,’ said Mum. ‘The sunglasses.’

There was a mobile home by the front gate marked ‘Reception’. Mum went in first, and Tanzie put the sunglasses on and waited outside on the step, watching through the bubbled-glass door. The fat man who raised himself wearily from a chair said she was lucky as there was only one still available, and they could have it for a special price.

‘How much is that?’ said Mum.

‘Eighty pound.’

‘For one night? In a static?’

‘It’s Saturday.’

‘And it’s seven o’clock at night and you had nobody in it.’

‘Someone might still come.’

‘Yeah. I heard Madonna was having a swift half down the road and looking for somewhere to park her entourage.’

‘No need to be sarky.’

‘No need to rip me off. Thirty pounds,’ Mum said, pulling the notes from her pocket.

‘Forty.’

‘Thirty-five.’ Mum held out a hand. ‘It’s all I’ve got. Oh, and we’ve got a dog.’

He lifted a meaty hand. ‘Read the sign. No dogs.’

‘He’s a guide dog. For my little girl. I’d remind you that it’s illegal to bar a person on the grounds of disability.’

Nicky opened the door and, holding her elbow, guided Tanzie in. She stood motionless behind her dark glasses while Norman stood patiently in front of her. They had done this twice when they’d had to catch the coach to Portsmouth after Dad had left.

‘He’s well trained,’ Mum said. ‘He’ll be no trouble.’

‘He’s my eyes,’ Tanzie said. ‘My life would be nothing without him.’

The man stared at her hand, and then at her. His jowls reminded Tanzie of Norman’s. She had to remember not to glance up at the television.

‘You’re busting my balls, lady.’

‘Oh, I do hope not,’ Mum said cheerfully.

He shook his head, withdrew his huge hand, and moved heavily towards a key cabinet. ‘Golden Acres. Second lane, fourth on the right. Near the toilet block.’

Mr Nicholls was so ill by the time they reached the static that it was possible he didn’t even notice where they were. He kept moaning softly and clutching his stomach and when he saw the word ‘Toilets’ he let out a little cry and disappeared. They didn’t see him for the best part of an hour.

Golden Acres wasn’t gold and didn’t look anything like even half an acre, but Mum said any port in a storm. There were two tiny bedrooms, and the sofas in the living room turned into another bed. Mum said that Nicky and Tanzie could stay in the one with twin beds, Mr Nicholls could go in the other and she would have the sofa. It was actually okay in their bedroom, even if Nicky’s feet did hang over the end of his bed and everywhere smelt of cigarettes. Mum opened some windows for a bit, then made up the beds with the duvets and ran the water until it came hot because she said Mr Nicholls would probably want a shower when he came back in.

Tanzie opened all the cupboards, which were made of chipboard, one after another, shut the floral curtains, and inspected the chemical loo in the bathroom, then pressed her nose to the window and counted all the lights in the other static caravans. (Only two seemed to be occupied. ‘That lying git,’ said Mum.)

While they waited for Mr Nicholls to come back, she studied the map from his car, running her fingers along the routes. ‘We’ve got plenty of time,’ she said. ‘Plenty. It’ll be fine. And look! More quiet time for you to revise.’ She sounded as if she was actually reassuring herself.

She had put her phone on to charge for precisely fifteen seconds when it rang. She started and picked it up, still plugged into the wall.

‘Hello?’ She sounded like she thought it might be Mr Nicholls, calling from the toilet block for more paper again. ‘Des?’ Her hand flew to her mouth. ‘Oh, God. Des, I’m not going to make it back in time.’

A series of muffled explosions at the other end.

‘I’m really sorry. I know what I said. But things have gone a bit crazy. I’m in …’ She pulled a face at Tanzie. ‘Where are we?’

‘Near Ashby de la Zouch,’ she said.

‘Ashby de la Zouch,’ Mum repeated. And then, her hand in her hair, ‘Ashby de la Zouch. I know. I’m really sorry. The journey didn’t quite go as I planned and our driver got sick and my phone ran out and with all the … What?’ She glanced at Tanzie. ‘I don’t know. Probably not before Tuesday. Maybe even Wednesday. It’s taking longer than we thought.’

Tanzie could definitely hear him shouting then.

‘Can’t Chelsea cover it? I’ve done enough of her shifts … I know it’s the busy period. I know. Des, I’m really sorry. I’ve said I –’ She paused. ‘No. I can’t get back before then. No. I’m really … What do you mean? I’ve never missed a shift this past year. I – Des? … Des?’ She broke off and stared at the phone.

‘Was that Des from the pub?’ Tanzie liked Des from the pub. Once she had sat outside with Norman on a Sunday afternoon, waiting for Mum, and he had given her a packet of scampi fries.