Billy was in the library. For the last 4 days free time he had (which was all of it unless in class or training) had been spent in the library gathering information and working off his dept. He, of course, had a dept; that the librarian did not share this notion was irrelevant. He had destroyed a book after all. A very expensive book, it turned out. So Billy worked, and when the librarians insisted that they had no work for him to do, he read and researched.
It turns out that spiders were not at all like ants, and there is no way for them to get that big naturally. That just confirmed Billy's suspicion: It had been foul play. Someone had attacked them.
Well, they were just going to have to do something about that, weren't they?
Hey son, wanna' learn how ta' make witch balls?