Who's stealing my library books?

So, my van is very clean and I know exactly what's underneath my living room couches and chairs... And it did not produce the library book that our friendly librarian has told us is overdue. And this is not the first one to disappear. To make problems worse, there's a good chance in our small town that the same librarian who frowned at me last month for losing a video will probably look at me with an assuming look when I report this one. And if you know me, I'm not really a messy sort of person. For the most part, I know where my things are located... There are, however, a few bedrooms to go looking through. I have a few less-than particular children - at least when it comes to bedrooms. I am NOT going through hurricane alley some kids call their bedroom. So, I will take my wallet, and humbly and quietly go to the library and make things right. And I really don't care what she thinks :)