That is what I could not get past, standing in that terminal: not the money, not even the forged letter, but the photographs.

My mother had paid a stranger to follow my sons.

To photograph them crossing a street holding their mother’s hands.

To document the route they walked to preschool, the times they came and went, the small unguarded pattern of two five-year-olds’ days — and to compile it all into a folder, coolly, as leverage.

There is a particular horror in seeing your own children rendered as surveillance, as a problem to be managed, as targets.

These were not photographs a grandmother takes.