Lily Summers woke at dawn and reached for the anklet she wore every day. Her fingers closed on nothing. She sat up fast on the porch of her hilltop farmhouse, where vines climbed the wooden walls. The anklet was gone. Someone had crept into her camp while she slept and taken it. That anklet was hers by a promise. She'd fastened it on the night she swore off shoes forever, and she meant to keep both. She ran barefoot across the grass, skirt flaring, and studied the ground. Bare footprints crossed hers near the porch steps. But a night breeze had blurred them into shallow dents. They pointed toward the woods, then split. One set went left toward the meadow. Another went right, toward the water. She crouched and traced each one. Both looked equally fresh. Lily's stomach knotted. She didn't know who took the anklet. If she chose the wrong trail, the thief would slip away for good. A guess could cost her everything. She needed to know the true direction before she moved. She hurried inside. On a shelf sat a clear glass bottle her grandmother had left her. Inside, a cluster of fireflies drifted around a painted compass face. Grandmother had promised the fireflies would answer to things you loved. Lily had never dared test it. Now she uncorked the bottle and held it flat on her palm. "Find my anklet," she whispered. The fireflies stirred. Their glow brightened, then swung as one toward the eastern side of the glass. They pressed against it, wings flashing, pulling toward the water. The left trail was a trick. The thief had gone right. Lily corked the bottle and ran. The false footprints had nearly fooled her. She followed the fireflies down the slope, past a tall birch tree with pale bark and aqua-tinted leaves. Its branches shivered though no wind blew. She slowed. Something clung to the lowest limb. Moths hung there in a soft cluster. Their wings carried markings shaped like tiny faces. The faces seemed to watch her pass. Lily's skin prickled, but she kept the bottle raised. The fireflies still pulled east, past the tree. Beyond the birch, the ground turned to mud along a stream. There, pressed deep and clear, was a single fresh footprint. Larger than her own. Beside it lay a torn scrap of green cloth snagged on a root. Lily picked it up. The fabric was fine, stitched with silver thread she had never seen in any village near her hill. This was no wandering thief. Whoever took the anklet came from somewhere she didn't know, dressed in cloth she couldn't afford. She stood at the stream's edge, bottle glowing east, cloth in her fist. The trail was real now. But it led away from everything familiar, toward a stranger who had planned this well.

Lily followed the fireflies along the stream until the light drained from the sky. The water led her far from her hill. Her feet ached. The trail's stones had cut her soles, and now the cold crept up her legs. Dusk turned the woods gray. She had no shoes by choice, no cloak by mistake, and no roof anywhere near. If she stopped here, she would freeze before dawn and lose the trail for good. She pushed on toward a sound of splashing. The stream widened into a cove ringed by rocks. A girl swam there, cutting the dark water in slow strokes. Her clothes lay folded on a flat stone, far from the edge. She did not seem to feel the cold at all. "You'll catch your death out here," Lily called. Her voice shook. The swimmer turned. She looked at Lily's bare, bleeding feet, then at the fireflies glowing in the bottle. She waded closer without hurry. "So will you," she said. "Worse. You're barefoot." "I'm following someone. He took something of mine." The girl climbed onto the rocks and pulled a shirt over her wet skin. "Marina," she said. "My uncle owns this cove. Nobody comes here but me." She studied Lily again. "You're chasing a thief in the dark with no shoes. That's stupid." "It's mine to get back." Marina didn't argue. She jerked her chin up the slope. "There's a cabin. Uncle's. Fire, blankets, a basin. You'll lose the trail overnight anyway. Water doesn't move in the dark." Lily hesitated. The bottle still pulled its light downstream, toward the stranger who had planned all this. But her feet had gone numb, and her hands could barely hold the glass. "Come or don't," Marina said. She was already walking. Lily followed. The cabin sat back among the trees, small and dark. Marina lit a fire and set a basin of stream water by the flames. Lily lowered her cut feet into it. The warmth stung, then eased. Marina looked at the green scrap knotted in Lily's fist. She held out her hand. Lily gave it over. "Silver thread," Marina said. She turned the cloth toward the firelight. "I've seen this. Not here. Downstream, past the falls. There's a house where the water splits. People come and go in cloth like this. My uncle won't go near it." Lily sat up. "You know where he's headed." "I know where the cloth comes from." Marina dropped the scrap in Lily's lap. "That's not the same as safe." Lily held the fabric and stared into the fire. She had shelter now, and warm feet, and a name for the place the trail led. But the fireflies still glowed toward the falls, and the house past them belonged to strangers who dressed like the thief. Her trail had a door now. She only had to reach it.