Break any single link and Andrew stayed lost.

And every one of those links traced back, in the end, to the same origin, the same first cause without which none of the rest could have happened: a housekeeper who found something she was not looking for, and chose not to look away.

Daniel stood in the rain and watched his living brother breathe, and understood that he was looking at a man who was alive because one brave woman, weeks earlier, had decided that the truth was worth the risk of her own life.

Everything downstream of that decision — the recording, the arrest, the map, this warehouse, this reunion — was only the working-out of the courage Maria had shown first, alone, with nothing to gain.