Your daddy is going to come and get us.” His father did not even know he existed.

But I would have promised him anything, anything at all, to keep his eyes open one more minute.

I have never forgiven myself entirely for that lie, and I have also come to understand that it was not really a lie at all, or at least not the kind that matters. Your daddy is going to come and get us. I said it because it was the most powerful, most hopeful, most keep-your-eyes-open sentence I could reach for in the dark, and because in the deepest part of me, even then, even freezing, I did not fully believe that the universe could be so cruel as to let my son die in the snow forty-eight hours after I had gotten him back.

I said it as a prayer disguised as a promise.

And the strangest thing about my whole strange story is that it came true.

Two mornings later, my son’s father did come for us — not knowing he was a father, not knowing he was coming, walking out of a black car into the snow and finding, at his own feet, the child he had never been told existed.