Milton could see what she meant: she thought he was going to ask for s.e.x in return. "No," he said, raising his hands. "Nothing like that. You don't have to do anything."

"Really? I don't believe you. All men are the same. Nothing in life is free."

"I'm not interested in that."

She frowned, and he sensed that he was digging himself into a deeper hole. She thought that his expression of disinterest was a slight.

"That's not what I meant," he stumbled. "I'm not handling this very well. I'm offering to help because it's the right thing to do. I'm making a mess of this, aren't I?"

She smiled and, with that, her face brightened and he saw how pretty she was. "A little."

"No strings. I don't expect anything in return."

He was conscious that he had lost control of the conversation and now he was blundering through it like a fool.

"Where do you live?"

"Bethnal Green. Very close. I've got a little place."

"All right. I will come."

Chapter Twelve.

IT WAS ONLY A SHORT DRIVE from Bethnal Green Road to Milton's flat at Arnold Circus. He parked the car in an empty s.p.a.ce, the sodium glow of the streetlamp overhead reflecting off the windscreen. He turned to the girl. She had fallen silent again in the car, and now she showed no signs of being ready to move.

"Are you all right?" he asked.

"Why are you doing this?"

"Because I want to help you."

"But you don't know me. I still don't understand."

Milton paused, resting his hands on the wheel as he tried to find the words to explain his motives to her. "I used to have a job where I had to do things that I shouldn't have done. I did it for a long time and I have a lot of things on my conscience. I decided that the only way I could make up for the things that I've done was to help people who needed it."

"Is this your place?"

"Just over there. I have a ground-floor flat. Nothing special, but you'll be safe there."

"And no-"

"And nothing. No obligations and no strings. Just somewhere you can stay until you've worked out what to do next."

She nodded. "Okay."

She opened the door and stepped out.

MILTON LED the way across the path to the building. The door to his flat was in a concrete lobby that was often used by the local junkies to shoot up. Milton moved them on whenever he saw them, and he was relieved to see that they were elsewhere tonight. Sarah had followed close behind, and, when he turned to check on her, he saw that she was anxiously looking to the left and right. He was as confident as he could be that they had not been followed, but anxiety on her part was reasonable given what she had experienced.

"Here we are," Milton said. "Home sweet home."

He took his key from his pocket and unlocked the door. He opened it, went inside and then stepped aside so that Sarah could follow.

The flat was small. He had one bedroom, a compact sitting room, a kitchen and a bathroom with a shower. Milton made sure to keep it neat and tidy. He always started his day by making his bed, and the discipline of that routine extended to ensuring that the rest of the flat was kept in good order. It was a hangover from his days in the army, but it had remained important to him.

Sarah stood in the small hallway as Milton came inside and locked the door behind him.

"You can hang your coat up there," he said, pointing to the row of hooks on the wall. There was nothing else on the hooks. Milton had only one coat, and he was wearing it.

She took off her jacket and hung it up.

It didn't take long to show her around. He started with the lounge, then the kitchen and bathroom. He finished in the bedroom.

"You have just one bedroom?" she said.

"Yes. But you can have it. I'll sleep in the lounge."

She didn't argue. She sat down on the edge of the bed, unzipped her knee-high boots and worked them off.

"You know they will try to find you," she said.

"They don't know where we are. You don't need to worry."

"And you don't know them. They are dangerous." She put a hand to her face and scrubbed her eyes. She was tired. "There was one man," she said. "A customer. He beat Maryana. Ilya was there, but the man beat him, too. Drago found him. He said they knew where he worked. Drago and Florin, they visited him. They beat him very badly. They took videos of him, after, and showed them to us. 'We protect you,' they said. 'Don't worry, we look after you.' They are frightening, John. They know things-find things. You say I am safe here, but how can you know that?"

"Because I know that we weren't followed. If you stay inside, there's no way that they could possibly find you here." Milton wanted to add that he was dangerous, too, and that it would take more than an Albanian thug to worry him, but he didn't. He didn't want to make her feel worse for the sake of his own ego.

"Do you want a drink?" he said instead.

"Please. Could I have a coffee?"

He pulled the bedroom door closed and went through into the sitting room. His laptop was on the table and he switched it on. It was an old machine, woefully underspecified by today's standards, and it always took five minutes to boot properly.

Milton went into the kitchen and made two mugs of coffee, then took them and a packet of biscuits to the bedroom. He knocked on the door and, at her quiet response, went inside.

Milton put one of the mugs and the biscuits on the bedside table. "Here," he said.

She reached for the mug and put it to her lips. "Thanks."

"I'm just in the other room," he said. "Shout if you need me."

"What are you doing?"

"Just looking through some stuff. You hungry?"

"A little."

"You like curry?"

"Sure."

"I'll cook. We'll eat in an hour. Okay?"

"Okay," she said.

Milton left the door partially ajar and went to the sitting room. The computer was ready. He took the bag of things that he had taken from the brothel and removed the hard drive that had been attached to the security camera. The USB cable was still plugged into the drive. Milton took the free end and plugged it into his laptop. The icon for the hard drive was visible after a moment. Milton clicked on it. The software that powered the device created new folders for every day that the camera was operational. The hard drive had a capacity of half a terabyte, and Milton expected that the software would start to overwrite older files once its capacity was reached. He scrolled down the files for all the available dates; there were two weeks' worth, more than long enough for yesterday to still be available.

He opened the folder. Two files were inside: they were labelled 'AM' and 'PM.'

He clicked on the file marked 'AM' and waited for his computer to open its default video player. He saw a static angle from the wall to the side of the doorway. The view included the cage to the left and a square of light that fell from the lamp on the door to the flat that was opposite the brothel.

The time and date were overlaid atop the image. The player had the standard navigation options; Milton clicked play and then set the footage to scroll through at ten times normal speed.

The door opened for the first time at 12.10 a.m. A man emerged, turned away from the camera before Milton could see much of him, did up his coat, and then headed into the lobby and out of the camera's line of sight. A customer.

A man appeared from out of the lobby at 12.25 a.m.: a nervous shrew of a man who glimpsed into the camera long enough for Milton to see his face. He knocked on the door, it opened, and he went inside. Thirty minutes pa.s.sed before the door opened again and the man hurried out. A second customer.

The view was uninterrupted for the next eight hours.

At 8 a.m., the light from the other side of the hall was interrupted by a line of shadow that was caused, Milton guessed, by the door opposite the brothel being opened and closed. Milton guessed that the occupant of flat number one was going to work.

Another two hours pa.s.sed before the next visitor came into view. Milton slowed the feed to run in real time. It was a man of reasonably large build, with a shaven head and a broad, flat nose. He knocked on the door, waited, then knocked again. He was impatient. He turned his head and looked over into the lens of the camera. He had small mean eyes, brows that protruded a little, and a stern line to his jaw. Milton could see the resemblance immediately between him and the man that he had killed inside the brothel.

Brothers, then.

The door opened, there was a brief conversation, and the man went inside.

Milton found that he was clenching his fists in antic.i.p.ation.

The man came out again after eight minutes. He was carrying a leather bag in his right hand. The night's takings, perhaps? He stepped aside to allow a woman to pa.s.s through the door. She was black, much shorter than the man, and very pretty. She stood nervously as a third person came out of the doorway. Milton recognised him at once. It was the man he had killed. All three of them were in shot for twenty seconds. The two men conversed, laughed at a joke, pointed at the girl and laughed again. The men were identical. Milton watched. The twins embraced before the man with the bag reached out for the girl, grabbed her by the arm and led her away.

Milton scrubbed backwards through the footage. He added start and stop points, copied the fragment, pasted it into an email and sent it to himself. His phone chimed to confirm that it had been received.

He went back into the hall and peered into the bedroom. Sarah was still on the bed.

"Can I show you something?"

She looked up. "Of course."

He took out his phone and opened the clip that he had sent himself. He put the phone down on the bed so that she could see it.

"Can you tell me who these people are?"

She pressed play.

Milton watched her face as she watched. Her expression changed: she became fearful.

"Who are they?"

"That man is Drago."

"What about the other man?"

"That is Drago's brother. Florin."

"And the girl?"

"That is Nadia."

Chapter Thirteen.

MILTON PUT ON HIS COAT and went back into the sitting room. The girl looked settled. She had moved into the sitting room and was sitting on the sofa, wrapped in a blanket that Milton had collected from the bedroom, and was watching junk TV. Milton had cooked a big pot of curry for them both and they had eaten together. Her empty bowl was on the floor by her feet. He stooped down to collect it.

She looked up and saw that he was wearing his jacket. "Where are you going?" she asked, her face betraying a flush of concern.

"I'm going to the shop," he said. "I need to get some bits and pieces. Do you need anything?"

"Do you have any beer?"

"I don't drink."

"Not at all?"

"No. Not for a long time. But it's fine. Buying you a beer isn't going to be a problem. What do you want?"

"I don't mind," she said. "Whatever they have. And some cigarettes."

Milton took his own packet from his pocket and tossed it over to her. His lighter was on the table. "Help yourself," he said. "The landlord doesn't like tenants smoking in the flat, so open a window and blow the smoke outside. What cigarettes do you like?"

"Marlboro Lights."

"The shop's on the main road. I'll be twenty minutes."

Milton went outside, closed the door and, after a moment of thought, very quietly put the key into the lock and turned it. He didn't think that she would try to leave, but it paid to be cautious. She had been through an ordeal, and there was the possibility that it might make her a little unpredictable. Milton wanted her to be there when he came back.