He turned to David and laid a hand on his shoulder. “I’m trusting you with this,” he said. “You must never tell anyone else what it is that I do.”

He raised a finger to his lips. “Top secret, old chap.”

David imitated the gesture.

“Top secret,” he echoed.

And they drove on.

David’s bedroom was at the very top of the house, in a little, low room that Rose had chosen for him because it was filled with books and bookshelves. David’s own books found themselves sharing the shelves with other books that were older or stranger than they were. He made space for his books as best he could, eventually settling on ordering the books on the shelves according to size and color, because they looked better that way. It meant his books kept getting mixed up with those that were already there, so one book of fairy tales ended up squeezed between a history of communism and an examination of the last battles of the First World War. David had tried to read a little of the book on communism, mainly because he wasn’t entirely sure what communism was (apart from the fact that his father seemed to think it was something very bad indeed). He managed to get about three pages into it before he lost interest, its talk of “workers’ ownership of the means of production” and “the predation of capitalists” almost putting him to sleep. The history of the First World War was a little better, if only for the many drawings of old tanks that had been cut out of an illustrated magazine and stuck between various pages. There was also a dull textbook of French vocabulary, and a book about the Roman Empire that had some very interesting drawings in it and seemed to take a lot of pleasure in describing the cruel things that the Romans did to people and that other people did to the Romans in return.

David’s book of Greek myths, meanwhile, was the same size and color as a collection of poetry nearby, and he would sometimes pull out the poems instead of the myths. Some of the poems weren’t too bad, once he gave them a chance. One was about a kind of knight-except in the poem he was called a “Childe”-and his search for a dark tower and whatever secret it contained. The poem didn’t really seem to end properly, though. The knight reached the tower and, well, that was it. David wanted to know what was in the tower, and what happened to the knight now that he’d reached it, but the poet obviously didn’t think that was important. It made David wonder about the kinds of people who wrote poems. Anyone could see that the poem was really only getting interesting when the knight reached the tower, but that was the point at which the poet decided to go off and write something else instead. Perhaps he had meant to come back to it and had simply forgotten, or maybe he couldn’t come up with a monster for the tower that was impressive enough. David had a vision of the poet, surrounded by bits of paper with lots of ideas for creatures crossed out or scribbled over.

Werewolf.

Dragon.

Really big dragon.

Witch.

Really big witch.

Small witch.

David tried to give a form to the beast at the heart of the poem but found that he could not. It was more difficult than it appeared, for nothing quite seemed to fit. Instead, he could only conjure up a half-formed being that crouched in the cobwebbed corners of his imagination where all the things that he feared curled and slithered upon one another in the darkness.

David was aware of a change in the room as soon as he began to fill the empty spaces on the shelves, the newer books looking and sounding uneasy beside these other works from the past. Their appearance was intimidating, and they spoke to David in dusty, rumbling tones. The older books were bound in calfskin and leather, and some of them contained knowledge that had long been forgotten, or that was found to be incorrect as science and the process of discovery uncovered new truths. The books that held this old knowledge had never come to terms with this relegation of their worth. They were now lower than stories, for stories were intended, at some level, to be made up and untrue, but these other books had been born for greater things. Men and women had worked hard on their creation, filling them with the sum total of all that they knew and all that they believed about the world. That they were misguided, and the assumptions they made were now largely worthless, was almost impossible for the books to bear.

A great book that claimed that the end of the world, based on a close examination of the Bible, would occur in 1783, had largely retreated into madness, refusing to believe that the present date was any later than 1782, for to do so would be to admit that its contents were wrong and that its existence therefore had no purpose beyond that of a mere curiosity. A slim work on the current civilizations of Mars, written by a man with a large telescope and an eye that discerned the paths of canals where no canals had ever flowed, gabbled constantly about how the Martians had retreated below the surface and were now building great engines in secret. It currently occupied a position among a number of books on sign language for the deaf, which, fortunately, could not hear anything that was being said to them.

But David also discovered books that were similar to his own. There were thick, illustrated volumes of fairy stories and folk tales, the colors still rich and full within, and it was to these works that David turned his attention in those first days in his new home, lying on the window seat and staring down occasionally upon the forest beyond, as though expecting the wolves and witches and ogres from the stories suddenly to materialize below, for the descriptions in the books matched so accurately the woods bordering the house that it was almost impossible to believe they were not one and the same, an impression strengthened by the nature of the books’ construction, for some of their stories had been added to by hand and the drawings within had been carefully created by someone with no small talent for their art. David could find no name upon the books to identify the author of the additions, and some of the tales were unfamiliar to him while still retaining echoes of the tales he knew almost by heart.

In one story, a princess was forced to dance all night and sleep all day by the actions of a sorcerer, but instead of being rescued by the intervention of a prince or a clever servant, the princess died, only for her ghost to return and torment the sorcerer to such a degree that he threw himself into a chasm in the earth and was burned to death in its fires. A little girl was threatened by a wolf while walking through the forest, and as she fled from him she met a woodsman with an ax, but in this story the woodsman did not merely kill the wolf and restore the girl to her family, oh no. He cut off the wolf’s head, then brought the girl to his cottage in the thickest, darkest part of the forest, and there he kept her until she was old enough to wed him, and she became his bride in a ceremony conducted by an owl, even though she had never stopped crying for her parents in all the years that he had kept her prisoner. And she had children by him, and the woodsman raised them to hunt wolves and to seek out people who strayed from the paths of the forest. They were told to kill the men and take what was valuable from their pockets, but to bring the women to him.

David read the stories by day and by night, his blankets drawn around him to protect him from the cold, for Rose’s house was never warm. The wind found its way in through cracks in the window frames and the ill-fitting doors, rustling the pages of open books as though seeking within some piece of knowledge that it desperately required for its own purposes. The great sweeps of ivy that covered the house, front and back, had broken through the walls over the decades, so that tendrils crept from the upper corners of David’s room, or bound themselves to the underside of the windowsill. At first, David had tried to cut them with his scissors, discarding the remnants, but after a few days the ivy would return, seemingly thicker and longer than before, clinging ever more tenaciously to the wood and the plaster. Insects exploited the holes too, so that the boundary between the natural world and the world of the house became blurred and unclear. He found beetles congregating in the closet, and earwigs exploring his sock drawer. At night, he heard mice scurrying behind the boards. It was as if nature was claiming David’s room as its own.