"How?"

He frowned, considering. "As we were leaving the emperor's ceremonial gathering this afternoon, I remembered that I'd left my cane in one of the parlors. Like a considerate goddaughter, you offered to fetch it for me. When you brought it back, the corridor where you'd left me was deserted, all the other guests departed, servants about their business elsewhere. Then you heard my voice from one of the window embrasures in the long drawing room. Not thinking anything of it, you came forward with the cane and then heard something that gave you pause. You listened, because you're trained to do so, and you heard a great deal more than you bargained for. When you thought you'd heard enough, you retreated to the corridor, and then reentered the drawing room noisily, calling my name."

He looked across at her and nodded. "That will serve, I believe."

Gabrielle nibbled her lip. "I suppose so, but will he accept that I've changed my allegiance so suddenly?"

"It will be for you to convince him," he said somberly. "He is your lover-that's compelling enough reason for many people. And he will also understand that working for Napoleon's downfall is not necessarily the act of a traitor to France. The man is no fool."

"No," Gabrielle agreed. "Nathaniel's no fool."

"Then I'll leave you to make your own plans." He walked to the door. "But don't delay, Gabrielle. It's vital the information reaches London as fast as humanly possible."

"I understand. Do you have today's password for the Russian zone?"

Talleyrand gave it to her without so much as a questioning eyebrow. "I'll send your maid back."

The maid bustled in immediately. "Your gown, ma'am. Are you ready for it?" She held up a delicate gown of cream crepe de chine. "Or do you wish to finish your coiffure first?"

"Help me with these feathers first." Feathers were de rigueur for formal attendance at court, even if the court was only that of the ignored and despised king and queen of Prussia.

Annette picked up one of the three black ostrich feathers and carefully inserted it into Gabrielle's high-piled hair, fixing it in place with a diamond-headed hairpin. The other two were as reverently placed, and Gabrielle examined her reflection with a critical frown before nodding her satisfaction.

She shrugged out of her tiring robe and stepped into the dress, turning to allow Annette to fasten the hooks at the back.

"Oh, you look lovely, madame," Annette breathed. "Those black feathers against your hair, and then the dress… so delicate."

"Thank you, Annette." Gabrielle smiled briefly at the wide-eyed girl. "And there's no need to wait up for me." She drew on her long silk gloves, easing them over her fingers, smoothing out wrinkles. She was doing everything with a curious detachment, a careful deliberation, as if the body she touched, the possessions she handled, were nothing to do with her at all.

Her skin was cold and clammy, as if she'd walked through a cold mist as she went downstairs. She knew exactly how she was going to approach Nathaniel-in a manner that would sweep all questions and objections from his mind, that would add overwhelming credence to the gift of love brought by a lover. She had never had to feign passion with him, but she wondered with chill apprehension whether she would have to this time… and if so, would he be able to tell?

She directed the coachman to Vilna Street. As they crossed into the Russian zone, the hussar at the guard post stepped forward, hand raised. "Password?"

Gabrielle leaned out of the window. "Alexander, Russia, greatness."

The soldier saluted and waved them through. Each day the password was chosen alternately by Napoleon and by Alexander. Today it had been Napoleon's choice. A nice piece of flattery that Alexander would emulate tomorrow.

She sat back in the darkness, drumming her fingers on the velvet squabs. She felt sick. She was doing what had to be done, but it didn't seem to help. It was only a technical deception, but it didn't seem to matter how many times she told herself that. She had told Nathaniel she was not engaged in any form of espionage, and now that was a lie. She couldn't betray her godfather's plot without endangering his life. So she must writhe on the horns of her dilemma.

She jumped from the coach as it came to a halt before the house on Vilna Street. Two officers in the green tunics of the Preobrazhensky regiment were walking down the street, deep in conversation. They stopped and stared at the woman emerging from the carriage. This part of the Russian zone was occupied only by single officers and less important aides. The married quarters and the apartments of the senior members of the czar's entourage were close to the royal residence. A lone woman on this street could mean only one thing-an assignation.

Gabrielle became aware of their stares. She turned and stared them down, her chin lifted, haughty arrogance in every line of her body.

They took in her evening dress, the glitter of diamonds, and nonplussed, they both bowed. Gabrielle didn't acknowledge the salute. She turned her back and walked up to the door of number six, banging on the knocker.

The woman who came to the door stared in as much astonishment as the two officers had. "Madame?"

"Monsieur Lubienski, please," Gabrielle said with the haughtiness of before.

Intimidated by the brilliance of her dress and the arrogant glitter in the dark eyes, the woman backed into the hall, giving Gabrielle room to step inside.

The hall was small and sparsely furnished. A flight of wooden stairs led upward. There was a smell of boiling cabbage in the air. "Upstairs," the landlady said. "Second door on the left, madame."

"Thank you." Gabrielle went swiftly up the stairs, her step light. At the second door she raised her hand to knock, then changed her mind. Bo idly, she lifted the latch and pushed open the door onto a narrow room furnished with a single cot, a plain dresser, and a massive oak table beneath a small, high window.

Nathaniel was in the process of dressing for the evening. He spun away from the spotted mirror as the door flew open. Gabrielle stood there. Energy seemed to pulse from her, creating a sparking halo around the dark red hair; the dark eyes had an almost febrile glitter, her lips were parted, the faintest flush glowed beneath the habitual translucent pallor.

"What the hell are you doing?" he said with a surge of anger.

"Fraternizing with the enemy," she said with one of her crooked, wicked smiles.

"By God, Gabrielle, you have done this just once too often. I told you I would not tolerate indiscretion-"

"I had to come," she said. "No one knows who I am. I sent the carriage away and told it to come back in an hour." She stepped toward him, pushing the door shut behind her.

She was an image of glinting diamonds, smooth, undulating cream silk, black feathers flowing in startling contrast to the vibrant hair massed on top of her head.

"I want you," she stated, coming toward him across the plain, unvarnished floorboards, her hands outstretched. "I wanted you with such an overpowering hunger that I had to come."

She seized his hands, pulling herself forward against him. A smile hovered on her lips, and the febrile glitter in her eyes intensified.

He could feel the power of her sensuality emanating in waves, lapping him, enclosing him. And he was lost as he always was when she came to him in this way.

She laughed softly, reading his capitulation, clipping her bottom lip with her teeth, moving her lower body against his loins with an urgent sinuous pressure that set his blood on fire.

"Now," she said. "I want you now,Nathaniel."

Catching her around the waist, he lifted her onto the table beneath the window. His hands circled her throat, covering the emerald collar, and he brought his mouth to hers. Her lips parted in eager response, her tongue fencing with his, her breasts pressing against his chest as she leaned into him.