MOVING THROUGH MOSCOW ALONE ON FOOT AT EIGHT in the evening, Sam was unidentifiable, a shadow, indistinguishable from the hundreds of thousands of Russians ending their workday and going home. Some were happy to go, and spoke to one another and laughed boisterously. Maybe a few had spent some time having a drink together. Others were just like Sam—tired, solitary men, getting onto buses that headed out into the distant suburbs where ordinary people lived. Sam waited until a line of them had boarded the bus and he’d seen how much they paid, and paid the same.

He had left the two cell phones in his hotel for the CIA, so he hoped the kidnappers were following the progress of their cell into and around Europe. Sam went east for as far as the bus went and then followed a few of the passengers at a distance. They entered high-rise apartment buildings collected together like the projects in big American cities.

The summer night was warm, so Sam managed to find a place to sleep outdoors at a construction site. A foundation had been dug, and there was a high pile of dirt with a tarp tied over it with several lines attached to grommets. Sam assumed that was to keep down the dust or prevent rain from turning the topsoil into a pyramid of mud. He climbed halfway up on the tarp so he wouldn’t be seen from the street and lay down. He hadn’t slept in two days and fell asleep immediately and woke only when the sun was high enough to shine on his face.

He got up and dusted himself off. As he was looking down at his clothes to be sure he had gotten them clean, he realized they were all wrong. He had bought them in Germany and Hungary and they didn’t quite look like the ones the men had been wearing on the bus the night before.