The night the sea swallowed the edges of the town, Lark & Vale's tent bled lantern light into the fog. Harbor gulls tucked their heads under pale wings, and the scent of salt braided itself with hot sugar and damp sawdust. From the boardwalk, the tent looked like a rust-red heart beating steadily against the dark. Juno Vale stood under the scalloped edge of the canvas and dusted her palms with rosin. It left a thin, honeyed film on her skin. Up in the ropes, the rigging thrummed with the wind, a low note she could feel in her teeth. On nights like this, the old riggers said, the air itself leaned in to watch. "Hey, highbird." Theo Finch popped out from behind a stack of travel trunks, a coil of cable draped around his neck, a spotlight gel clamped in his teeth. He spat it into his hand and grinned. "You ready to defy gravity and common sense?" Juno rolled her eyes, but there was a warmth in it. Theo was a year older and had been living under tents since he could walk; his jokes were part armor, part drumroll. "I'm ready to not fall. You ready to not blind anyone?" "Bold of you to assume I can be contained." Theo waggled his eyebrows and then glanced toward the main mast, where lanterns cut cones out of the fog. "The generator's sulking. I gave it a pep talk. It responded by threatening to kick me." Around them, the circus woke all at once, like a flock lifting from a field. Horses snorted in the stables, tossing manes braided with silk. The contortionist stretched her spine until it looked like sunlight bending. The clown troupe painted on new expressions, laughter smudged in colours that stained their knuckles. Madame Lark's red tailcoat flashed as she strode past, her cane clicking on the hard-packed earth, her black top hat pinned with a silver lark that winked in the gaslight. She paused when she reached Juno. "Chin up, little star," Madame Lark said, her voice velvet over iron. "You have a way of making the air forget its own weight." Juno offered a small nod. The ringmaster's praise never failed to hand her a fistful of butterflies. It was not that she wanted to shine so much as she wanted to belong in the light she'd been chasing since she could remember. Her mother had taught her the riggers' whistles and the difference between a bowline and a figure-eight before she was tall enough to see over a barrel. Later, her mother had taught her how to climb, how to trust a wick and the hands that tied it. When her mother left the circuit two years ago with a troupe chasing a residency overseas, Juno learned a new kind of balance. She tightened the strap on her ankle brace and flipped open the programme. The cardboard smelled like ink and glue. Twelve acts arched across the page in looping letters: the jugglers, the glass violinist, the equestrian ballet. Finale: Cascade of Stars. No mention of the thing everyone whispered about in cramped caravans and between mouthfuls of stew when they thought no one young was listening: Act Thirteen. An act that appeared only when the wind came from the sea and the fog thinned just enough that the moon could find the tent's peak. An act without a name on the bill and not always the same when it showed up at all. Juno told herself she didn't believe in rumors. She believed in knots that held and palms that didn't sweat at the wrong moment. She believed in the way the ring shivered under a running horse. She snapped the program shut and headed toward the costume wagon. Her trunk was where she'd left it, brass corners gone dull with years, a chipped blue star on the lid. She lifted it open-and paused. On top of her neatly folded leotard lay a square of cream paper, its edges decked like torn lace. A small seal of black wax pressed into its corner held the flap shut. The seal's shape made her chest go tight: not a lark like Madame Lark's pins, but a moth with spread wings, so finely stamped she could count the segments on its body. She broke the wax with a fingernail. Inside, the words were written in a careful, upright hand: Act Thirteen. Midnight. Catwalk. Come alone. Under the last line, there was a faint symbol in pencil, barely there: a tiny cluster of dots and lines that looked exactly like the riggers' whistle for wait. For a second, the tent crowded too close, the smell of hot canvas and greasepaint a little too thick. She glanced up, expecting a laugh, a wink, someone jumping out of the shadows with a drumroll. No one did. Outside, a horse snorted. Somewhere above, a pulley whispered as someone pulled a line taut. Theo's head appeared in the doorway, a coil of fairy lights slung over one shoulder. "I heard Madame Lark asked you to open the second half," he said. Then he saw Juno's face. "What's wrong?" She held up the card. Theo took it, read, and then made a low sound under his breath. "That's... extremely dramatic." He turned it over. "You think this is a joke? Zara and the twins love this sort of thing." Juno shook her head. "Zara's a glitter bomb in human form. She'd have dusted the envelope." She tapped the penciled dots and lines. "And this-this is a real riggers' mark. Not many people know them." Theo's mouth flattened a little. "What are you thinking?" "I'm thinking someone wants me at the top of the tent at midnight." Juno folded the note along the crease and slid it into the inner pocket of her jacket, where it warmed against her ribs. "And I want to know why." Theo glanced towards the catwalks where the rigging webbed the air, dim and high. "We can check the lines before curtain," he said. "If someone's playing games up there, I want electrical between them and the ground. Also a very stern talking-to." They slipped backstage, past the shadow of the big ring and the hum of tuning strings. Juno's boots made soft sounds in the sawdust as they crossed behind the drapes. Up close, the tent's bones showed: steel ribs, ropes as thick as a wrist, hardware that clicked and sighed with the weight of what it held. She felt, as she always did, the prickle at the base of her skull that came with heights and the thought that somewhere above, a tiny mistake could grow teeth. The ladder up to the catwalk had been polished to a shine by years of palms on maple. Juno tested the first rung, then climbed, the move-and-breathe rhythm sliding into her muscles like a familiar song. Theo followed, breath slower but steady, the fairy lights bumping against his shoulder. At the catwalk, heat pooled under the tent's peak, the canvas holding it close. The catwalk itself was a narrow spine strung over shadow. Juno crouched and ran her hand along the nearest anchor line. The rope was new, its strands unfrayed. But at the knot-she paused. The pattern of it was wrong. Circus knots had a kind of language; this one had an accent. Whoever tied it favored a sailor's hitch with an extra tuck that barely anyone under this tent used anymore. "Someone re-tied the catches," she said softly. Theo leaned in. "You sure?" "Feel this." She guided his fingers along the ridges. "And see the chalk?" Tiny marks, almost invisible unless you knew where to look, dotted the steel beam. Not standard rigging chalk, but a thinner, waxy line, shaped into arrows and, here and there, a small moth. "I hate how interesting this is," Theo muttered. He glanced down through the grate between their boots. The ring looked like a coin dropped in velvet. Chairs ringed it in ripples; faces blurred in the pre-show twilight. The hush before applause hummed like a held note. A low whistle threaded the air. Juno went still. It wasn't the birdcalls the animal trainers used, or the sing-song of the clowns. It was one of the riggers' codes, barely there: hold. 'Did you hear-' Theo began. "Hold," Juno whispered back, and the word trembled as if the air were imitating her. Below, the house lights dimmed. A wave passed through the audience like grass bending under wind. Drums rolled in the pit. Madame Lark strode into the ring, cane glinting, smile precise and deep enough to swallow secrets. "Ladies and gentlemen and everyone under our canvas," she called, "welcome to the place where gravity remembers how to dream." Her voice climbed the ropes and touched the peak. The first act flowed like poured silk. Jugglers tossed knives that flashed like fish. A woman in green leaned a glass violin against her shoulder and drew notes so pure the fog itself might have cleared to hear better. Horses thundered in a starburst, hooves a heartbeat that pounded in Juno's sternum. Juno kept her eyes up. More chalk marks. A wick tucked in the old style. A bell, no bigger than her thumbnail, hung from a pin high above the centre of the ring. It swung lazily though there was no draft here, and its tongue tapped the rim, delicate as a teacup. "You seeing this?" Theo breathed. "Yes." And something else: tucked into the clip on her own trapeze line, hidden under a twist of rope, a small silver disk. Juno plucked it free. A phoenix, wings flung wide, was etched into the metal. When she pressed her thumb over it, heat seemed to bloom under the imprint. "Souvenir?" Theo asked. "Or a sign." Juno slid the coin into the pocket with the note. Below, the contortionist folded herself into a glass box, her smile unbroken. The crowd's sound swelled and softened, a tide pulling at the edges of Juno's balance. Halfway through the first half, the tent shivered in a way that had nothing to do with the wind. The generator coughed; the main light faltered, flickered, then steadied. The second spotlight-a tight, cold beam Theo only used for cues-snapped on by itself and cut a perfect circle high near the centre mast. It illuminated nothing. Then, for one stammering heartbeat, it didn't. A figure was there, sharp against the white: tall, balanced on the narrow beam as if it were a city street, a white mask cupping the face and stretching into moth wings at the temples. Gloves. A coat cut close, colour swallowed by shadow. The figure lifted two fingers, a silent greeting or command, then the light blinked out, leaving the afterimage burned into Juno's lids. Theo swore under his breath. "I didn't do that." Madame Lark didn't miss a beat, but from above Juno could see how her jaw tightened. The crowd took the flicker as part of the show. Applause rippled, easy and pleased. Juno breathed through it. Waiting until midnight felt suddenly impossible. Whoever had tied these wicks, who had left the note and the coin and hung bells where breath touched them-they weren't patient either. Between acts, while clowns tumbled into the ring with buckets of paper confetti and the audience laughed, Juno pressed her palm to Theo's shoulder. "I'm going up to the apex," she said. "I have to know if the anchor is clean." Theo's mouth made a tight line. "I'll kill the extra spots to give you cover." He touched his knuckles to hers. "Two flashes means stop. Three means run. If you see anything that looks like a damaged line-" "Whistle twice," Juno finished. She was already moving. She edged along the catwalk toward the central mast, where metal crossed like a compass. Boards creaked thoughtfully under her weight. The heat thickened, a thin sweat slicking her spine. The tent's skin curved around her like the inside of a whale. She could hear, more than see, the next act taking its bow-the sea of hands coming together, the ring a pool of sound she could fall into if she looked too long. Chalk arrows, faint as ghosts, pointed the way. A moth drawn with two quick lines perched where the catwalk narrowed to a beam only five planks wide. There, a rope coiled like a sleeping snake. The braided strands gleamed faintly, and Juno realized why: thin wire ran through the fibers, catching what little light made it up here. A bell chimed once, delicate. There was no breeze. The whistle came again. Closer this time. Stop. Juno froze. The air beside the mast thickened and then separated into a shape, as if the light itself had decided to lean on something. The figure from the spotlight stood five yards away, as real and fragile as a drawn line. The white moth mask turned toward her. No eye-holes she could see, and yet she felt seen down to the bones of her hands. The figure lifted a hand. Metal glinted. A blade, small and workmanlike, like the ones the riggers carried to free a caught line or cut someone loose. Juno found her voice in her throat, thin and dangerous as slack wire. "That line anchors Sera's trapeze." Her friend's act was next, a swallowed breath away. "If you cut-" The figure tilted its head. The moth wings along the mask's edge caught a thread of light and went silver. The other hand made a shape in the air: three dots and a line. The hold whistle, in sign. Light from the ring flashed as Theo's worklight flickered twice-a warning. Wait. "I'm not leaving," Juno whispered. She shifted her weight forward, toes gripping the plank, every muscle rehearsed to a quiet roar. Below them, the crowd's clapping crested and fell. The bandleader lifted his bow. A drum rolled like thunder contained in a barrel. Sera's silhouette passed under the rig, slight and sure as a question mark. The blade touched the rope. Fibers tightened, feeling the threat. The bell gave a bright little cry. A single strand pinged, and everything held its breath.