I remember, back when I was in middle school, reading a story that opened with a meeting of two shadowy figures. One asked the other, "do you have a lock for my key?" And the other brought out some magic item that they had been looking for, that they had the means to utilize.
It's been a long time, and I don't remember much in the way of details, but that line has always stuck with me. I know this isn't much to go on, but can anyone help identify this book?