The key was taped under the desk drawer, small and cold, and it fit the slot in that handleless door at the bottom of the deep stair. I turned it, and something inside gave, and the door swung in on a room that had been sealed a very long time.
There was water on the floor, an inch of it, seeping up cold and clean from a spring the house had been built over more than a century back. That was the sound I had heard, water finding its way in, and a shelf of old preserves that had finally let go and slid down into it. No mystery in the noise at all. The mystery was the room.
It was a springhouse, older than the house above it, stone walled and low, the kind our great grandparents used to keep milk and butter cold before there was such a thing as a refrigerator. My grandmother had kept it locked my whole life. And now I saw why. Along the dry shelf at the back sat a row of tin boxes, and every one of them was full of her.
Letters, hundreds of them, tied in ribbon. Photographs of a young woman I barely recognized as Grandma, laughing on the arm of a man who was not my grandfather. A little pair of knitted booties, never worn, wrapped in tissue. And a birth record, and beside it an adoption paper, dated the year before she married the man I knew as my grandfather.
My grandmother had given up a baby, long ago, before any of us were born, and she carried that grief down into the cold and the dark and kept it there alone for sixty years.
The letters were to that child. One a year, every year, on a birthday, to a son she was never allowed to keep and never stopped loving. She wrote him the news of the family he never knew. She told him she thought of him every single day. She had no address to send them to, so she brought them down here, to the one room that was hers alone, and left them where the world could not see her weep.
I understood then why she changed the subject every time I asked. It was not a secret to be ashamed of. It was a wound too deep to open at a supper table. She had loved a lost child in silence her whole life, and the locked door was not hiding a horror. It was guarding a mother heart that never healed. I gathered up the letters, and I decided, standing in that cold water, that I would find him. He had a family. It was time somebody told him his mother never let him go.