Valiant by Holly Black

the way into a construction area where a mound of sand waited to be spread. On the other, close to where she walked, was what looked like a bricked-up doorway. Below it, Val saw the stump of a tree, its roots digging deep into the concrete.
    “The tree.” Val kicked the stump softly. The wood was wet and dark with filth, but the roots sank down into the concrete sidewalk, as though they stretched past the tunnels and pipes, worming their way into some secret, rich soil. She wondered if this was the same tree that bloomed with pale fruit.
    It was an eerie thing to see a stump here, nestled up against a building as if they were kin. But perhaps no eerier than the idea that she’d fallen into a fairy tale. In a video game, there would have been some pixilated storm of color and maybe even an on-screen message warning her that she was leaving the real world behind. Portal to Faerieland. Do you want to go through? Y/N.
    Val knelt down and rapped three times on the stump. The wet wood barely made a sound under her knuckles. A spider scuttled out toward the street.
    A sharp noise made Val look up. A fracture appeared in the stone above the stump, as though something had struck it. She stood and reached out to run her finger across the line, but as she touched the wall, patches of stone cracked and fell away, until there was a rough doorframe.
    She stepped through onto the stairwell, steps extending up and down from the landing. When she looked back, the wall was solid. A sudden burst of terror nearly overwhelmed her and only pain held her in place.
    Trip Trap.
    “Hello?” she called up the steps. It hurt to move her mouth.
    Trip Trap.
    The troll appeared on the landing.
    Who’s trip trapping over my bridge?
    “Most people would have come sooner.” His rough, gravelly voice filled the stairway. “How your mouth must hurt to bring you here at last.”
    “It wasn’t so bad,” she said, trying not to wince.
    “Come up, little liar.” Ravus turned and walked back to his rooms. She hurried up the dusty stairs.
    The large loftlike space flickered with fat candles set on the floor, their glow making her shadow jump on the walls, huge and terrible. Trains rumbled above them and cold air rushed in through covered windows.
    “Here.” In the palm of one six-fingered hand, he held a small, white stone. “Suck on it.”
    She snatched the stone and popped it in her mouth, in enough pain not to question him. It felt cool on her tongue and tasted like salt at first and then like nothing at all. The pain abated slowly and with it, the last of the nausea, but she found exhaustion taking its place. “What do you want me to do?” she asked, pushing the rock into her cheek with her tongue so she could talk.
    “For now, you can shelve a few books.” Turning, he went to his desk and began to strain the liquid from a small copper pot thick with sticks and leaves. “There may be an order to them, but since I have lost the understanding of it, I don’t expect you to find one. Put them where they will fit.”
    Val lifted one of the volumes off a dusty pile. The book was heavy, the leather on it cracked and worn along the binding. She flipped it open. The pages were hand lettered and there were watercolor and ink drawings of plants on most of the pages. “Amaranth,” she read silently. “Weave it into a crown to speed the healing of the wearer. If worn as a wreath, confers invisibility instead.” She closed the book and pushed it into the plywood and brick shelves.
    Val rolled the stone around in her mouth like a candy as she put away the troll’s scattered tomes. She took in the mishmash of moth-eaten army blankets, stained carpet, and ripped garbage bags that served as curtains not even the outside streetlights could pierce. A dainty flowered teacup, half full of a brackish liquid, rested beside a ripped leather chair. The idea of the troll holding the delicate cup in his claws made her snort with laughter.
    “To know your