Chapter Text
Marinette shouldn’t have been down here.
That thought looped uselessly through her head as her footsteps echoed against old stone, the sound swallowed almost immediately by the cavernous dark. The maintenance level beneath the Opéra Garnier wasn’t on any public map. It wasn’t even supposed to exist anymore – sealed after renovations, abandoned decades ago. But they had always assumed Hawkmoth’s lair would be surrounded by forgotten places, places no one looked.
She hugged her arms tighter around herself and forced her breathing to slow.
In and out. You’re not panicking. You’re investigating.
An akuma had fled this way – had been shepherded this way, if she was being honest. Ladybug had chased it until it slipped through a rusted service door, then vanished like smoke. When Marinette detransformed to blend back into the crowd above, the quiet had felt… wrong.
The silence down here wasn’t peaceful. It pressed against her eardrums like water pressure, making her hyper-aware of every breath, every scuff of her flats against grime-slicked stone. The air tasted of rust and old water, of things left to rot in the dark. Mineral deposits crusted the walls in pale, leprous patches, and somewhere in the distance, water dripped with metronomic persistence. Each drop seemed to count down to something. Her phone’s flashlight beam cut a weak path ahead, illuminating maybe three meters of corridor before the darkness ate it whole.
The cold was seeping through her jacket now, the kind of damp chill that came from stone that never saw sunlight. She could feel it settling into her bones, making her fingers stiff around her phone. The screen’s glow seemed pitifully small against the weight of all that darkness pressing in from every side.
She should call Chat Noir. She should. Her thumb hovered over his contact – the little black cat emoji she’d added as a joke that had somehow stuck – but she hesitated. What would she even say? Hey, partner, I’m investigating a creepy tunnel system as a civilian because I had a hunch? He’d lose his mind. He’d lecture her about safety, about how she couldn’t just throw herself into danger without backup, without her powers.
He’d be right.
But the akuma had come this way for a reason. Hawkmoth didn’t make mistakes – not anymore, not after all these months of fighting him. Every move was calculated, every attack a chess piece sliding into position. If she could just find where it had gone, if she could discover what he was planning before he struck again…
You can’t fail him, she thought, and wasn’t sure if she meant Chat Noir or all of Paris or both. You can’t keep letting Hawkmoth stay one step ahead.
The corridor branched ahead, splitting into three directions like the fingers of a skeletal hand. Marinette paused, sweeping her light across each opening. The left passage sloped downward, water gleaming on the walls in sheets that looked almost organic, like the tunnel was weeping. The middle one looked more stable, older brick giving way to carved stone that might have been original to the building’s foundation. Support beams crossed overhead, their wood so old it had gone black, and she could see where someone – decades ago, maybe longer – had carved initials into one of them. The right–
Her light caught something. A smear of darkness against the wall, too uniform to be shadow. She moved closer, heart hammering against her ribs, and had to step over a puddle that reflected her phone’s light like an eye staring up at her.
Purple. A streak of purple residue, still faintly luminescent in the beam of her phone.
Akuma magic.
There. Fresh enough that it hadn’t fully dissipated. She was close.
Marinette turned down the right corridor, following the trail. The passage narrowed as she went, the walls pressing closer until she had to turn sideways to squeeze through in places. The stone here was older, rougher – hand-carved, maybe, back when the opera house was first built. Or before. Paris had layers, centuries of construction built on top of ancient foundations. Down here, she could be walking through tunnels that predated the Revolution for all she knew.
The thought should have been fascinating, and she could only imagine Alya’s reportive excitement in finding this place. Instead, it made her skin crawl.
Her jacket caught on something – a piece of exposed rebar, rusted orange and jutting from the wall like a broken bone. She tugged free, heard the fabric tear, and felt a spike of irritation that was almost welcome because it was normal. Normal teenage annoyance at ruining her favorite jacket. Not the creeping dread that was trying to wrap itself around her lungs.
Chat Noir is probably wondering where I am, she thought, trying to ground herself in something normal, something real. They’d separated after the akuma fled – he’d gone to check the rooftops while she’d slipped away to follow the trail from street level. He’d expect her to regroup with him soon. He’d worry if she didn’t. She could picture him now, perched on some chimney with his ears swiveling, scanning the streets below for any sign of red and black. When he didn’t find her, he’d start calling. Her civilian phone would buzz in her pocket, and he’d leave increasingly worried messages.
She hated making him worry, but she’d be fast this time.
The corridor opened suddenly into a wider space – not quite a room, but a junction where several passages converged. The ceiling arched overhead, lost in shadow beyond her phone’s reach, and when she tilted her light upward, she caught a glimpse of old stonework, the kind with decorative flourishes that suggested this had once been something more than just a maintenance tunnel. A wine cellar, maybe, or storage for the opera house above. The floor here was uneven, buckled in places where the foundation had shifted over the years. The purple residue was stronger here, smeared across the floor in a pattern that looked almost deliberate. Like something had been dragged. Or like someone had wanted her to follow.
The realization hit her like ice water.
Trap.
Marinette spun, already moving back toward the corridor she’d come from, but her light caught movement in the darkness. A figure, tall and broad-shouldered, stepped out from one of the other passages with the fluid grace of someone who knew exactly where they were going. Her phone’s beam swept across silver and purple, across a mask that gleamed like polished bone.
Hawkmoth.
The scream died in her throat. For a moment – a horrible, stretched-out moment – she couldn’t move, couldn’t think, couldn’t do anything but stare at him standing there between her and escape. He looked different up close. Taller than she’d remembered. More real. The butterfly window on his chest pulsed with sickly light, casting purple shadows across the walls that seemed to writhe and twist. She could see details now that she’d never noticed during their battles as Ladybug – the way his coat moved like it was alive, the intricate silver embroidery on his lapels, the way his cane caught the light with an almost liquid gleam.
And he was looking at her. Not at Ladybug. At her. At Marinette.
“Marinette Dupain-Cheng?” His voice carried surprise – genuine surprise that made her stomach drop even further. He tilted his head slightly, and she could hear the confusion threading through his cultured tone. “I must confess, I wasn’t expecting… you.”
Her mind raced. He knew her name. He knew her name. But that didn’t mean… he couldn’t know her personally, could he? Plenty of people knew Marinette Dupain-Cheng. She was just a student, just a normal girl, just—
But why would he sound surprised if he’d been expecting someone else? Had he been expecting Ladybug? Had this trap been meant for her alter ego, and she’d stumbled into it as a civilian? Or had he been expecting someone else entirely – another investigator, maybe, or a journalist? Doubtful.
“I don’t–” Her voice came out thin, breathless. She swallowed and tried again, failing to hide her fear. “I don’t know what you want, but–”
“Don’t you?” He took a step closer, and she could hear the tap of his cane against stone, sharp and deliberate. Marinette stumbled back, her shoulders hitting the wall hard enough to send a jolt of pain down her spine. Loose mortar crumbled under the impact, pattering to the floor. “You’re close friends with Alya – the two of you being quite persistent in your investigations, my dear. Following akumas, documenting attack patterns, updating that surprisingly helpful blog, and always so conveniently nearby when Ladybug appears.” He paused, and she could hear the frown in his voice. “Though I must admit, I didn’t realize it was you doing the following. The daughter of the baker. Adrien’s… classmate.”
Oh god. Her heart was trying to hammer its way out of her chest. Oh god, oh god, he knows–
No. No, he couldn’t. If he knew she was Ladybug, he wouldn’t sound confused. He wouldn’t be surprised to see her here. This had to be something else. A suspicion, maybe? A test? He thought she was just a nosy civilian who’d gotten too close to his secrets.
But the way he’d said Adrien’s name… there was something there, something that made her skin crawl. Did he know Adrien? How did he know Adrien? And Alya for that matter?
“I-I’m just a student, just a normal girl…” she said, forcing the words out past the fear closing her throat. Her voice was shaking. She couldn’t stop it from shaking. “I’m nobody! I don’t – I’m not–”
“You’re quite clever, actually.” Hawkmoth moved again, circling slowly to cut off the corridor she’d entered from. His cane tapped against stone with each step, the sound echoing through the junction like a countdown. “Clever enough to notice patterns. Clever enough to follow trails. Clever enough to be dangerous, a liability.” Another step. Another tap. “I had suspected someone was tracking my akumas’ movements. I simply didn’t expect it to be a simple teenage girl. How… disappointing.”
He thought she was investigating him. Just investigating, as a civilian. The relief was so intense it made her dizzy – but it lasted only a second before new terror crashed over her. Because if he thought she was dangerous, if he thought she knew too much…
“I won’t tell anyone,” she said quickly, the words tumbling over each other. “I swear, I won’t – I-I’ll delete everything, I’ll stop, I’ll–”
“I’m afraid it’s too late for that.” His tone shifted, losing that note of surprise and settling into something colder. More final. “You’ve seen too much. You know too much. And I cannot afford loose ends. Not now. Not when I’m so close.”
He moved fast – faster than she’d expected, faster than anyone without a Miraculous should be able to move. His hand closed around her wrist before she could run, yanking her away from the wall with enough force that her feet left the ground for a second. Marinette screamed, the sound tearing out of her throat and echoing through the tunnels, bouncing off stone and coming back to her distorted and strange. She twisted in his grip, trying to break free, and felt something in her wrist grind painfully. Not broken, but close.
Tikki, she thought desperately. Tikki, I need–
But she couldn’t transform. Not now, not with him right here, not when it would confirm everything he suspected. If she transformed, if she revealed herself, he’d know. He’d know, and then Chat Noir would be alone and at risk, and Paris would be–
Hawkmoth’s other hand came up, catching her free arm. She kicked at him, her foot connecting with his shin with a solid thud that should have hurt, but it was like kicking stone. He didn’t even flinch. Instead, he twisted, using her momentum against her with the practiced ease of someone who knew exactly how to control a struggling opponent, and suddenly she was pressed face-first against the wall with both arms wrenched behind her back.
The stone was freezing against her cheek, rough enough to scrape. She could feel the grit of it, could smell the mineral tang of old water and decay. Her arms were bent at an angle that made her shoulders scream, and when she tried to move, tried to get any leverage, he simply applied more pressure until white spots danced in her vision.
“Let me go!” She thrashed, panic overriding thought. The stone scraped against her cheek, and she felt the hot sting of broken skin. Her phone had fallen, its light casting wild shadows as it spun across the floor before coming to rest against the far wall, the beam pointing uselessly away from them. “Someone – help – ”
“No one can hear you down here.” His voice was still calm, still measured, and somehow that made it worse. Like this was just another task to complete, another problem to solve. “That’s rather the point of choosing this location.”
She felt him shift, felt one hand release her wrist – but before she could capitalize on it, before she could move, something cold pressed against the side of her neck. The sharp bite of a needle, and she had just enough time to recognize what it was before–
No.
Marinette bucked, throwing her weight backward with every ounce of strength she had. Her head connected with something – his chest, maybe his chin – and she heard him grunt, but he was ready for it. His body was a wall behind her, immovable. The needle pierced her skin, and she felt the burn of something entering her bloodstream, spreading like ice through her veins. It was cold, so cold, like someone had injected winter directly into her neck.
“No–” The word came out slurred. Wrong. Her legs buckled, and only his grip kept her upright. She could feel her muscles going slack, could feel her body betraying her. “What did you—what—”
“Hush.” His hand moved to support her as her body stopped obeying her commands, and she felt herself being lowered with surprising gentleness. “It will be over soon. Just a sedative. You’ll wake up eventually.”
The world tilted. Marinette tried to focus, tried to think, but her thoughts were scattering like startled birds. The darkness at the edges of her vision was spreading, eating inward with inexorable patience. She could feel her heartbeat slowing, could feel each pulse growing more distant. Her hands were numb. Her feet were numb. Everything was going numb and cold and far away.
Tikki. The thought was distant, muffled, like it was coming from underwater. Tikki, I’m sorry.
She was being lowered to the ground – she could feel the cold stone against her back, could feel how it leached the warmth from her body. Could see Hawkmoth’s masked face hovering above her, but it was all getting farther away, like she was sinking into deep water. Her phone’s light was still visible, a small bright point in the encroaching dark, and she tried to focus on it, tried to use it as an anchor.
Chat Noir.
She tried to say his name. Tried to scream it, to call for him, to warn him somehow. But her lips wouldn’t move. Her tongue was lead in her mouth. The darkness was a tide, and she was drowning in it, and all she could think was that she’d failed. She’d failed him. She’d failed Paris. She’d walked into a trap like an amateur, and now–
I’m sorry. I’m so sorry. Please–
Chat–
The darkness swallowed her whole.
The last thing Marinette was aware of, before consciousness slipped away entirely, was the faint flutter of something small and warm against her collarbone – Tikki, hidden in her jacket, trembling with helpless fear. And then even that sensation faded, and there was nothing but the dark, and the distant echo of her own heartbeat, and the terrible certainty that when she woke up – if she woke up – everything would be different.
Everything would be worse.