THE MEETING LOCATION HAD BEEN CHOSEN FOR ITS isolation, an abandoned Catholic church on the east side of a little-used road fifty kilometers northwest of Cork, Ireland, near the border between County Tipperary and County Cork. The structure that remained was all but invisible from the road. One of those places only a local would know about, then forget over time.

As a bonus, no one lived within a kilometer and a half of the ruins, making it a natural choice for an exchange. In the two days Jonathan Quinn had been scouting the location, no more than a dozen cars a day had driven past, and not a single one had even slowed, let alone stopped.

The roof of the church had long since disappeared, leaving only the gray, pitted stone walls of the chapel. Encouraged by the wet Irish climate, vegetation had grown up around the building, both surrounding it and filling the inside. It was as if a congregation of flora was waiting in the open-air sanctuary for a priest who had yet to arrive.

Nearby, an untended cemetery provided the only reminder that people had once worshipped here. Quinn didn’t know how long the compound had been abandoned, but the most recent grave marker he’d located had been for someone named Maureen Owens, year of death 1889. So it wasn’t hard to imagine that it had been at least a century since any parishioners had gathered between the chapel walls.