Yesterday, for the first time, I left a bookstore signing early. No, I wasn't angry at the folks at Borders in Manassas. Quite the contrary, they had done a wonderful job of talking up my signing and sharing my brochures with their customers. No, I left 45 minutes ahead of schedule because I had already signed the two dozen books they had ordered. It is a wonderful feeling to sell out at a bookstore, and there are few ego-boosting experiences to match watching two mystery fans deliberating over who will take home that last book.