Luna recalls the last time she saw the old man who ran Grass Creek General Store, a year before he died. He told her a story about a spool of red string that had hung on a nail behind the counter since the store opened in 1947. Nobody knew where it came from, but every few years someone would come in needing it — to tie a bundle of wildflowers, to mark a trail, to bind a wound that wouldn't stop bleeding. The string never ran out. The old man never sold it. When Luna asked why, he just pointed at a line of small, faded dates penciled on the wall beside the nail — each one the day someone last asked for the string, and the day they were last seen in town. After he died, the new owner took down the string. Luna hasn't been back since, but she heard the new owner's wife started sleepwalking toward the treeline. The story is set in Grass Creek, Colorado, in late summer of 2019, at dusk.