Don’t try to shake his hand. If he offers his, take it briefly and let go.

She stood very straight, with her hands behind her back and her eyes downward at a slight angle. Zizi’s eyes were roving over her. Finally he stepped forward and extended his hand. “It’s a pleasure to meet you.” She took it and heard herself say: “The pleasure is mine, Mr. al-Bakari. It’s an honor to meet you, sir.”

He smiled and held on to her hand a moment more than was comfortable. Then he released it suddenly and made for the painting. Sarah turned and this time was treated to a view of his back, which was soft through the shoulders and wide in the hips. “I’d like to see the painting, please,” he said to no one in particular, but Sarah was once more listening only to the voice of Gabriel. Do the presentation on Zizi’s timetable, he had said. If you force him to sit through a story, you’ll only make him angry. Remember, Zizi is the star of the show, not Marguerite.

Sarah slipped past him, careful not to brush his shoulder, then reached up and slowly removed the baize covering. She remained in front of the canvas for a moment longer, gathering up the fabric and blocking Zizi’s view, before finally stepping to one side. “May I present Marguerite Gachet at Her Dressing Table by Vincent van Gogh,” she said formally. “Oil on canvas, of course, painted in Auvers in July 1890.”

A collective gasp rose from Zizi’s entourage, followed by an excited murmur. Only Zizi remained silent. His dark eyes were casting about the surface of the painting, his expression inscrutable. After a moment he lifted his gaze from the canvas and looked at Isherwood.

“Where did you find it?”

“I wish I could take credit for it, Mr. al-Bakari, but it was Sarah who discovered Marguerite.”

Zizi’s gaze moved to Sarah. “You?” he asked with admiration.

“Yes, Mr. al-Bakari.”

“Then I’ll ask you the same question I asked of Mr. Isherwood. Where did you find her?”

“As Julian explained to Mr. Malone, the owner wishes to remain anonymous.”

“I’m not asking for the identity of the owner, Miss Bancroft. I’d just like to know how you discovered it.”

You’ll have to give him something, Sarah. He’s entitled to it. But do it reluctantly and be discreet. A man like Zizi appreciates discretion.

“It was the result of several years of investigation on my part, Mr. al-Bakari.”

“How interesting. Tell me more, please, Miss Bancroft.”

“I’m afraid I can’t without violating my agreement with the owners, Mr. al-Bakari.”

“Owner,” said Zizi, correcting her. “According to Andrew, the painting is the property of a French woman.”

“Yes, that’s correct, sir, but I’m afraid I can’t be any more specific.”