He hoped he hadn’t missed a weapon or two, hidden in the straw. Not that Vérité needed weapons.

She was still talking to herself. “I will entertain the hypothesis that you turned English. If you were Police Secrète, I’d already be dead, killed in my sleep a minute ago. All this breathing I’m doing is the argument you’re not French anymore.”

He crossed the room till his boots touched straw. “I never was French. Let’s go back to that meeting in the Moravian church.”

“It has not wandered far from my thoughts. As I say, I came to be blackmailed. Aside from the surprise of meeting you, all went as expected. I met Smith, who threatened to uncover me to the Service. Treason was mentioned. And the slitting of throats. Also torture and imprisonment and the futility of panicked flight.”

“Many and varied threats.”

“One could almost believe you were there, eavesdropping. Yes. Many and varied. After the threats and dire predictions,” she set her hands free of the cloak and gestured out a dire prediction, “we discussed blackmail like civilized people.”

He said, “Smith wants the Leyland codes.”

He caught the split-second hitch in her breathing. “You’ve deduced a great deal.” She said it calmly enough. “Yes. I was placed with the great codebreakers of the age, the Leylands, my impractical, dithering old ladies. It’s been an education living with them in Brodemere, though not a terribly useful one. Did you know I can now speak four dead languages?”

He caught something in her voice. A sadness around the edges of the words. “You can’t go back to them again.”

“Do you think I don’t know? The note I sent to Meeks Street contains my goodbye.” She held her hands out like cups and turned them over with a dreadful finality. “That part of my life is finished.”

The Tuteurs at the Coach House used to rap her knuckles with a cane when she talked with her hands. Un-English, they called it. Pas suffisamment anglais. They never broke her of the habit.

He said, “I’m sorry.”

“There are inevitabilities.” She turned her head away. “I was always packed and ready to run. I had longer than I expected.”

“Smith promised you could go back, I suppose.”

“For a mere soupçon of a treason I can remain Camille Leyland, he says. The British Service will remain in blissful ignorance, he says. A single code and I’m free of him forever.”

The cynicism in her voice was reassuring. “He lies.”

“I wouldn’t believe him if he recited the alphabet. He wants the Mandarin Code.”

He searched his memory. “Not one I know.”

“At some point you may turn your attention to how Mr. Smith knows about it. I suspect Military Intelligence, myself.” She patted the straw next to her. “I wish you’d sit down.”

“So you can attack me more conveniently?”

“There’s no convenient way to attack you, Devoir.” She shook her head sharply. “No. I’m calling you Pax now. Pax, you have friends outside. You have the British Service at your disposal. I can’t fight all of you. I’m trying to negotiate a truce. For God’s sake, sit down and talk to me.”

“A truce?”

“Some semblance thereof. I’d give you promises of good behavior if it would do any good.”

“I wouldn’t believe them.” But he folded himself down next to her, his shoulder beside her shoulder. Nothing could be more platonic and uninvolved than the two of them, side by side, not touching.

She said, “This is better. You aren’t Devoir, but in a poor light I can almost fool myself into thinking you are.”

It was just as well she couldn’t see into his head. Right now he was imagining how easy it would be to slip that cloak away from her shoulders. In this light, her skin would glow white as the moon.

His mind took off like a runaway cart. Vividly, he saw himself pulling her down beside him in the straw. In his imagination, she was more than willing. He saw himself stroking her shift up and up her thigh, revealing the soft, dark tangle between her legs. Hidden at the center, carmine and rose madder.

Enough. He wasn’t going to touch her.

He slowed his breathing. Wrenched his mind back from the brink of some madness. Curled his hands on his knees, relaxed and harmless.

He was in control. Always. That didn’t change no matter how many damned, beautiful, half-naked old friends he sat next to. “Tell me about Mandarin.”

Starkly, simply, she said, “Mandarin replaces Peacock.”

That was a drench of cold water in the night.

It replaced Peacock. That made Mandarin the new code for private communication between Galba, Head of Service, and the twenty-four Heads of Section across Europe. Code for the most secret of secrets.

He swung around in the straw and knelt, confronting her. “You aren’t carrying that around, are you?”

“Not being mad, no. Even Smith—who thinks I’m stupid as an owl—didn’t expect me to arrive with Mandarin in my pocket. I’m to bring it to our next meeting.” She gave one of her almost shrugs. “Where he intends to kill me. Or possibly kidnap and torture me. We will see.”

She knew the importance of what she’d just said. She watched him, hiding the ferocity of her attention under half-closed lids.

The next meeting. This was why he’d followed her across London. This was why he’d come into Braid’s Bookshop alone. She could tell him a time and place where the Merchant would be. “You have your own plans for that meeting,” he said. “He won’t realize that. He underestimates women. You, he wouldn’t understand at all.”

“I am opaque and mysterious. Tonight, however, you will see my forthright side. Ask your questions.”

They were inches apart, with shadows and silence around them. Her pupils were huge. The chaos of her curls fell across her forehead and around her cheeks, making her look ridiculously young. Under her cloak, she pulled her knees to her chest, becoming small, emphasizing how slight she was. How unlikely it was she’d attack anybody. Nobody could be more harmless.

He said, “Why did you meet Smith in the church?”

“The blackmail letter—”

“—Would send you racing to the nearest port, not trotting tamely up to London. You’ve been ready to run for years.”

He watched her decide what to say, thinking it over carefully. Vérité had been rash sometimes. Cami was older and wiser. She picked out a few words. “He offers me something I want.”

“You must want it badly to come strolling under the nose of the Service.” He let impatience into his voice. “What could be that important?”

“You don’t need to know.” A sharp shake of her head. “It’s something the British Service would toss away without regard or interest.”

“What?”

“Consider this instead.” She raised her index finger. “He still wears French gloves. He hasn’t equipped himself head to foot in English clothes. That argues he hasn’t been in England long.”

“Reasonable assumption.”

Two fingers. “He wants Mandarin. Only Mandarin. He’s gone to remarkable effort to get it. Do you see what I’m saying?”

“One specific code implies one very specific need.”

“One operation. Perhaps the Service can imagine what it is. I cannot.” He heard the small clicking sound of Vérité tapping her teeth together. She used to do that when she was adding facts up, seeing patterns in them. Her mind had always fascinated him.

She held up a third finger. “I have one last conclusion about Mr. Smith. He’s not only newly come to England, he’s working on a tight budget of time. A strict, short allotment of days. Maybe even hours. He was fussy about when and where we meet. It’s important. He was angry. I saw one flash of it in his eyes when I tried to change the place and day.”

He knew that anger. No raised voice. No warning. It only showed in the eyes and in the curl of a lip. To a child, it had been terrifying. For an instant his flesh shrank under old pains. Memories of old beatings. The monster had possessed a heavy, self-righteous fist. “He gets angry easily.”

“You know him well, then. I thought so, from your voice.”

There were spies of skill and training. Spies of intuition. Cami had become both. She tilted her head to the side and studied him. “You hate him.”

He didn’t answer her.

For what the Merchant had done to his mother, he would die. Bare hands, gun, knife. It didn’t matter so long as the Merchant lay dead on the ground at his feet. This time, he’d be sure the job was done right.

“‘It is better to be the rider of a great hatred than to be the one ridden.’ My family says that and I share it with you. They have a great many wise sayings.” She let her hand drop to her side. “The meeting place is the last important thing I know. The only secret I’m withholding. If I tell you where and when the meeting is, will you let me go free?”

“No.”

“I see.” She closed her eyes and put her forehead down on the cloak where it covered her knees. She sat that way, breathing quietly, her eyes closed. When she spoke again, it was in the most ordinary tones and her voice was muffled against her cloak. “If I don’t walk down a certain street, on a certain day, at a certain hour, Smith will turn into smoke and blow away. You’ll lose him.”

“Tell me the meeting place.”

She looked up to study the straw and floorboards in front of her. “My head is so full of secrets it rattles when I walk. Your Service will lock me up like the Crown Jewels. They’ll send a substitute to that rendezvous or try to ambush Smith on the street. And it won’t work.” She met his eyes. “You have to let me go so I can meet Mr. Smith.”

“So you can pursue some private exchange with him.”

“If you let me go, you can make sure he dies. You, yourself. There will be no political bargaining that trades a French spy for an English one. No imprisonment he can escape from. No bribes that open doors for him. If you let me go, here and now, I will give you his death, into your own hands.”

“You’ve found a way to tempt me.” Wise little Vérité, with her pithy sayings, had most certainly grown up. She’d emerged as Cami, with a cynical, supremely clever understanding of her fellow man.

She said, “If you take me to Meeks Street, your superiors will tell the Foreign Office and Military Intelligence. The Police Secrète will know within a day. Military Intelligence is riddled with French spies. Maybe the Service is.”

“I don’t think so.”

“I know two French spies placed right in the heart of the Service.” She grinned suddenly, a wry, feral twist of the lips, and he saw the old Vérité again, inside this new Camille. “We were good, weren’t we? Except, I never spied. I committed a thousand lies, in every way, right and left, but I swear I never passed code to the French.”

“I believe you.”

“It doesn’t matter. I’ll pay for all the spying I didn’t do. If the Service doesn’t kill me—regretfully and humanely, the way you’d put down a good dog—they’ll keep me locked up till my secrets cool. Years and years. Unless the French dispose of me. Unless Military Intelligence gets me, which they will, because my crimes fall within their authority. Then I am dead.” She reached her hand out from under the brown wool and laid it on his arm and watched it there, as if she wasn’t sure what it might do. “Do you remember what we swore, all those years ago, in Paris, in the Coach House? The Oath of the Cachés?”

“Childish drama.”

“Your idea. Your words.”

“I was dramatic in those days.”

When he’d come to the Coach House, the Cachés were preying on each other. The strong ones took food and blankets from the weak.

He’d put a stop to it. He wasn’t the biggest. He wasn’t even the best fighter. But he was used to getting hurt and he had nothing to lose. He fought with a ferocity none of them could match. In a week, he had most of them behind him. In a month, he had them all.

The Oath of the Cachés turned a dozen vicious, broken children into a wolf pack, faced outward against the world. “I made that up because we needed something to believe in. We needed magic.”

She recited softly, “‘To the last extremity, I will never betray another Caché. We are one blood.’” She said it in French, the way they’d said it, crouched in a circle on the floor of that cold attic dormitory.

He hadn’t thought about the words in a long time.

She said, “So far as I know, none of us broke the oath. Will you give me to the British Service?”

“I have an oath there, too.”

“I’m no danger to England. I swear it. I’ll come to the meeting place with you. I’ll be the bait in your trap. I’ll give you Smith’s head on a platter.” Her fingers tightened. “But don’t give me to the Service. Let me go. I’m asking for my life, Pax.”