They decided to go. No one argued. People in the harbor were used to dreamers; besides, the ferryman shrugged as if he'd crossed those waters himself in other lives and took their coins.

They followed the sound toward a swell of fog. The ferry shuddered and then the fog dissolved, revealing an island that should not have fit their maps. Trees grew in languages: some barked with lichen letters, some leaves shivered in alphabets. Flowers bloomed in impossible hues—the kind you only ever see when you remember a dream vividly enough to write it down.

Nelly began to wander differently. She found edges in places people considered center; a ruined pier held a corridor of old maps beneath its boards, a streetlamp hummed with a schedule of seas. She became the sort of person who could read a weathered fence and find its beginning. Children who followed her on rainy afternoons felt as if they were walking through stories already told. People sought her when a thing had gone missing; she would sit quietly, listen with the compass pressed to her ribs, and point to a direction no one else had noticed. She never charged for the help; maps, once found, wanted only to be used.

"Yes," Anna said, and Nelly nodded.

Every so often, when memory thinned for either of them—when a color dimmed or a route fogged—they returned to the harbor. The ferryman squinted as if recognizing an old, peculiar debt and let them cross. The island did not always appear the same. Sometimes the paradisebirds were shy and hid in the canopy; sometimes they were brazen, perching on the wheelhouse and adjusting the ferryman's hat. Once, the birds left a single feather at the ferry's prow; its touch brought a wind of music that hummed through the boat for days.

Nelly Avi—everyone called her Nelly—knew more about maps than most sailors. She kept a broken compass in her pocket and drew coastlines on the back of grocery receipts. Nelly believed the world had secret edges, places you only reached if you followed the right kind of loneliness.

At the ferry dock, the sky had gone a bruise blue. Anna closed her sketchbook; the drawings inside glowed faintly as if lit from behind. Nelly folded her map-paper, and where the lines crossed a new route shimmered like a promise. They did not speak much on the way home; the island had taught them that some things are shaped better in silence.