'We have your daughter.'

The words were delivered in a high-pitched, artificial voice which sounded vaguely like a man impersonating a woman.

At first she thought she'd misheard, but in the slow, heavy silence that followed, the realization came upon her like an approaching wave.

'What? What do you mean?'

'We have your daughter,' repeated the caller, and now Andrea could tell that he was using something to disguise his voice. 'She's not there, is she? Look around. Can you see her?' His tone was vaguely mocking.

Andrea looked around. The hallway was bathed in gloom, the rooms leading off it silent. There was no one there. She felt a rising sense of helpless panic, and fought to keep herself calm.

'You can't see her, can you? That's because we have her, Andrea. And if you ever want to see her again, you'll do exactly as you're told.'

Andrea felt faint. Needing some kind of support, she leaned back against the front door, her movement clicking it shut. Keep calm, she told herself. For God's sake, keep calm. If they're phoning you, then it's got to be a good sign. Surely?

'What do you want?' she whispered, her whole body tensing as she waited for the answer.

'Half a million pounds in cash.'

'I haven't got that sort of money.'

'Yes, you have. And you're going to get hold of it for us as well. You've got exactly forty-eight hours.'

'Please, I'm going to need longer than that.'

'There's no compromise. You have to get us that money.'

Andrea began to shake. She couldn't believe this was happening. One minute she'd been thinking about winding down after her meeting, the next she was plunged into a crisis involving the most precious person in the world to her: Emma, her only daughter. She exhaled slowly. It was still possible this was some kind of hoax.

'How do I know you're not lying?' she asked.

'Do you want to hear your daughter scream?' replied the caller matter-of-factly.

Oh, Jesus, no.

'Please, for God's sake, don't do anything to her. Please.'

'Then do exactly as we say, and don't ask stupid questions.'

'She's fourteen years old, for Christ's sake! What sort of animal are you?'

'One who doesn't care,' he snapped. 'Do you understand that? I don't give a toss.' His tone became more businesslike. 'So listen closely. It's ten to nine now. At nine o'clock on Thursday, in forty-eight hours' time, you're going to receive a phone call on your landline. At that point you'll have the half a million ready in used notes, denominations of fifties and twenties. Do you understand that?'

Andrea cleared her throat. 'Yes,' she said.

'You'll be told where and when to deliver it. As soon as we've received it, you get her back.'

'I want you to let me speak to her now. Please.'

'You'll speak to her when we're ready.'

'No.'

'No? I'm afraid you're not in any position to argue with us. We have your child, remember?'

She took a deep breath. 'Please. Let me speak to her. I need to know she's OK.'

'You can speak to her next time we call. When you have the money.'

'How do I know she's even alive?' Andrea shouted, determined not to cry even though she felt the tears stinging her eyes.

'Because,' said the caller calmly, 'she's no use to us dead. Now go and get that money, Andrea. Then you can speak to her. And don't even think about going to the police. Because if you do, we'll know about it. We're watching you. The whole time. The first sign of the police and Emma dies. Slowly and painfully.' There was a pause. 'Nine o'clock Thursday night. Be ready.' The line went dead.

For several seconds Andrea remained frozen to the spot, the shock of what was happening still seeping through her system. Someone had taken her daughter. Her lively, pretty fourteen-year-old girl who did well at school and who'd never hurt anyone. a Complete innocent. Her poor baby must be absolutely terrified. 'Please don't hurt her,' Andrea whispered aloud, her words sounding hollow in the empty hallway.

Andrea Devern was a tough woman, and her life hadn't been easy. A successful, financially independent entrepreneur, she'd had to fight hard to get to the position she was in now. She'd taken one hell of a lot of knocks on the way, knocks that would have finished a lot of other, more privileged people, and she'd always held firm. But nothing could have prepared her for this. Emma was Andrea's world, no question, and to think of her now, trapped and frightened with no understanding of what was going on, filled her with a helpless dread. And that was the worst part, the sheer helplessness. Her daughter was missing, and there was absolutely nothing she could do.

Except satisfy the demands of the anonymous caller and find him half a million pounds.

My only child… If anything happens to her…

She flicked shut the phone and walked into the kitchen, the heels of her court shoes clicking loudly on the mahogany floorboards. She grabbed a glass from one of the cupboards and filled it with water from the tap, then drained it in one go.

She had to keep calm, but it was hard when you were alone. And that was when her thoughts turned to Pat.

Pat Phelan. Andrea's husband of two years, and Emma's stepfather. Charming, good-looking and five years younger than her, she'd been infatuated with him when they met. A whirlwind romance had been followed by a marriage barely four months later. Her mother had described her as a 'fool' and Pat as a 'ne'er do well'. At the time Andrea had thought her mother was being shortsighted, and maybe even a little jealous, but in recent months she'd begun to get the first hints that maybe the old woman, spiteful as she'd always been, had a point. After all, it takes one to know one.

She needed Pat now, more than she ever had.

So where the hell was he?

She refilled her glass with water and swallowed another couple of large gulps, then walked over to the landline and punched in the number of his mobile. Pat didn't work. He was between jobs. It seemed he'd been between jobs pretty much ever since they'd met. His trade, if you could call it that, was bar work. He'd been working in a bar in Holborn when she'd first seen him. A month later he'd had an argument with the owner, and the job was history. He tended to be something of a house husband now. He ferried Emma to and from school most days, and picked her up from friends' houses when Andrea was at work, but more and more in the evenings he liked to go out for a couple of drinks at the local pub, or to one of his old haunts down the road in Finchley, which was where he'd been brought up. Sometimes he didn't come home until well after she was in bed.

But the thing was, Pat didn't leave Emma alone in the house. He'd only ever go out when Andrea got back from work. It was a situation that suited her well, although occasionally she wished he'd show a bit of get up and go, and maybe secure some gainful employment.

The phone rang and rang, but Pat wasn't answering. It went to message and, keeping her voice even, Andrea left one, asking – no, telling – him to call her back as soon as possible.

She slammed the receiver back in its cradle, cursing the fact that he hadn't picked up, then stood by the sink, her eyes closed, taking slow, deep breaths, trying to make sense of the situation she found herself in. Emma had been kidnapped by a ruthless individual who, from the way he spoke, clearly had an accomplice, or accomplices. She forced herself to look at things logically. The motive for abducting Emma was money. Which meant there was a good chance of getting her back. There had to be. Andrea knew she could raise half a million in the time given. It wouldn't be easy, but she had access to ready cash in a way that other people didn't. There were numbered accounts, and cash that had been squirrelled away, far from the prying eyes of the taxman, in a safety deposit box in Knightsbridge. Probably just enough to cover this amount. If she did what she was told and delivered the money to where they wanted it, she'd have her daughter back.