After breakfast she would place two calls to London on the shipboard system. First she would dial her apartment in Chelsea and, invariably, would find two or three ersatz voice messages left by the Office. Then she would call the gallery and speak to Chiara. Her soft, Italian-accented English was like a lifeline. Sarah would pose questions about pending deals; Chiara would then read Sarah’s telephone messages. Contained in the seemingly benign patter was vital information: Sarah telling Chiara that she was safe and that there was no sign of Ahmed bin Shafiq; Chiara telling Sarah that Gabriel and the others were close by and that she was not alone. Hanging up on Chiara was the hardest part of Sarah’s day.

By then it was usually ten o’clock, which meant that Zizi and Jean-Michel were finished working out and the gym was now free to other staff and guests. The rest of them were a sedentary lot; Sarah’s only company each morning was Herr Wehrli, who would torment himself on the elliptical machine for a few minutes before retiring to the sauna for a proper Swiss sweat. Sarah would run thirty minutes on the treadmill, then row for thirty more. She had been on the Dartmouth crew, and within a few days began to see definition in her shoulders and back that hadn’t been there since Ben’s death.

After her workout Sarah would join the other women on the foredeck for a bit of sun before lunch. Nadia and Rahimah remained distant, but the wives gradually warmed to her, especially Frau Wehrli and Jihan, the fair-haired young Jordanian wife of Hassan, Zizi’s communications specialist. Monique, Jean-Michel’s wife, spoke rarely to her. Twice Sarah peered over the top of her paperback novel and saw Monique glaring at her, as though she were plotting to shove Sarah over the rail when no one else was looking.

Lunch was always a slow, lengthy affair. Afterward the ship’s crew would bring Alexandra to a stop for what Zizi referred to as the afternoon jet-ski derby. For the first two days Sarah remained safely on the deck, watching while Zizi and his executives leaped and plunged through the swells. On the third day he convinced her to take part and personally gave her a lesson in how to operate her craft. She sped away from Alexandra’s stern, then killed the engine and gazed for a long time at the pinprick of white on the horizon behind them. She must have strayed too far, because a few moments later Jean-Michel came alongside her and gestured for her to return to the mother ship. “One hundred meters is the boundary,” he said. “Zizi’s rules.”