The old cinema had been closed for as long as Finn could remember, but it still owned a corner of everyone’s imagination. Parents talked about first dates there. Grandparents talked about newsreels and boiled sweets. Aunt Tess claimed she once saw a ghost in Screen Two but later admitted it might have been Mr Donnelly looking for his umbrella. To children, the building was less history than dare: touch the side door, look through the crack, drop a stone through the ticket hatch and listen for how long it took to stop bouncing.
Finn had never been properly inside. That seemed impossible now that he stood in its dark corridor with Asha’s torch cutting a narrow path ahead. The place felt awake in the way abandoned buildings do, not haunted exactly, but resentful at being remembered only when useful. Old carpet muffled their steps. A damp poster curled from the wall like a tongue. Somewhere above them, pigeons shifted and muttered opinions.
Cormac kept glancing behind them. Nell kept muttering that responsible adults were a marvellous invention and perhaps they should try one. Asha moved like a detective in a book, except shorter and more annoyed. Finn tried to look brave because he was the one holding the whistle, and because sometimes bravery is just embarrassment with better posture.
Finn did not run, because running from the principal’s office is the kind of decision that becomes a family legend for all the wrong reasons. Also, the window was locked, Cormac was blocking the chair, and Finn’s bag contained a possibly stolen historic whistle beneath a sandwich that suddenly smelled aggressively of ham.
The girl in the yellow hood vanished from the glass.
Cormac made a small strangled noise. “Who was that?”
“You saw her?” Finn said.
“No, I often ask about invisible girls holding biscuit tins outside school windows.”
“So sarcasm is your panic language. Good to know.”
“Shut up. Who is she?”
“I don’t know.”
“You don’t know? She’s mouthing run at us like we’re in a spy film made by teachers.”
Finn grabbed his bag. “Maybe we should listen.”
“You just said we shouldn’t run.”
“I have revised my position.”
The door handle turned.
Finn and Cormac snapped back into their chairs so quickly they nearly achieved innocence. Mr Keane entered with Sergeant Mallon and the woman from Saturday night. Up close, the woman looked younger than Finn had thought, maybe in her thirties, with dark hair pinned badly and a pencil tucked behind her ear. Her raincoat dripped on the floor. She carried a folder with ROWANMERE ROVERS YOUTH CLUB printed on the tab.
“Finn,” Mr Keane said, “Cormac. Sergeant Mallon and Ms Ivers have a few questions. You are not in trouble.”
This was another adult sentence Finn distrusted. Children were often told they were not in trouble moments before everyone explained the special shape of the trouble they were in.
Ms Ivers gave them both a brief smile. “I’m an investigator with the county youth sports fund. We’re reviewing access to the community hall on the night of the semi-final.”
Cormac stared at his shoes.
Finn’s hand tightened on his bag strap.
Sergeant Mallon pulled over a chair. “This is informal. We’re trying to understand who had keys, who was in the building, and when.”
“Then ask adults,” Cormac muttered.
“We are,” said Ms Ivers. “Adults have been very helpful in giving us different versions of the same night.”
Finn liked her immediately.
Mr Keane remained by the door. “Answer honestly.”
Ms Ivers opened the folder. “Finn, your father was treasurer. Did he ever ask you to collect keys from the hall office?”
“No.”
“Did you ever see him in the cupboard room after the semi-final?”
Finn hesitated. He had seen many things after the semi-final. Players flinging wet bibs. Parents carrying trays. Cormac’s father speaking to Mrs Phelan by the stage. Mr Keane unlocking the trophy case for photographs. His own father kneeling beside the accounts box, gathering receipts that had spilled when someone knocked a chair into the desk.
“I saw him near it,” Finn said carefully. “Not in it.”
Cormac’s foot tapped faster.
Ms Ivers turned to him. “Cormac?”
“I don’t remember.”
“That’s unfortunate,” she said, “because several children remember you going in there.”
Cormac’s head jerked up.
Finn stared at him.
“I was getting cones,” Cormac said.
“At half eight?” Ms Ivers asked. “After the match was over?”
Cormac’s mouth opened, then closed.
Sergeant Mallon’s voice softened. “No one is accusing you of anything, lad. But if you saw something, now is the time.”
Cormac looked at Finn with an expression Finn did not understand. It was not kindness. It was not hatred either. It was the look of someone standing on thin ice and realising there were other people on it too.
“I saw a coat,” Cormac said.
“What coat?” Ms Ivers asked.
“A red one. In the cupboard room. Hanging on the peg.”
Mr Keane frowned. “Many people own red coats.”
Cormac shook his head. “This one had a tear near the pocket. Like a triangle.”
Finn knew that coat. Everyone knew that coat. It belonged to Mrs Phelan. She had torn it on the nail by the bike shed and refused to replace it because, as she said, coats should earn retirement, not receive it for vanity.
Ms Ivers wrote something down.
“Did you see Mrs Phelan?” she asked.
“No. Just the coat.”
“Anything else?”
Cormac looked at the window.
Finn followed his gaze. Empty path. Rain on glass. No yellow hood.
“No,” Cormac said.
Ms Ivers closed the folder halfway. “Finn, one more thing. Have you seen the club whistle?”
The sandwich in his bag became the loudest object in Ireland.
“No,” Finn lied.
It was a terrible lie. It had knees and elbows. It fell down in the room and knocked over a lamp.
Ms Ivers watched him. Sergeant Mallon watched him. Mr Keane watched him. Cormac watched him with his mouth slightly open, because even he knew Finn had just lied like a dog trying to explain biscuit crumbs.
Ms Ivers did not call him on it. That was worse.
“All right,” she said. “Back to class, both of you.”
They left the office together. In the corridor, the ordinary school sounds rolled towards them: chairs scraping, children chanting spellings, someone being told not to put a ruler in their mouth. It felt insulting that the world could remain ordinary while Finn’s heart attempted to escape through his ribs.
Cormac grabbed his sleeve. “You have it.”
Finn pulled free. “Have what?”
“Don’t.”
“I don’t know what you’re talking about.”
“Your lying face is so bad it should be reported.”
Finn glanced towards Room Six. “Why didn’t you tell them everything?”
Cormac’s jaw tightened. “Why didn’t you?”
They stood there, enemies with matching secrets.
At lunch, Finn did not eat. The ham sandwich had become evidence-adjacent, which ruined its appeal. Asha inspected the brass whistle behind the shelter shed while Nell stood guard with the solemnity of a palace soldier and the height of a garden gnome.
The whistle was smaller than it seemed in the trophy case. Heavy brass, dulled with age, dented along one side. NESSA ROWAN 1992 was engraved near the mouthpiece. Around the ring, tied so tightly Finn had missed it before, was a thread of red wool.
Asha leaned closer. “That’s not from your sock.”
“No.”
“Mrs Phelan’s coat?”
“Maybe.”
Nell whispered, “Are we allowed to be touching stolen heritage?”
“It isn’t stolen,” Finn said. “It was planted.”
“That sounds like stolen with extra steps.”
Asha took out her notebook. She had titled the page THE BROKEN SEASON CASE, which Finn thought was dramatic until he remembered his aunt kept a list of enemies beside the kettle.
“Facts,” Asha said. “One: whistle vanished after semi-final. Two: club keys vanished same night. Three: your father found account problems after that. Four: anonymous envelope sent to Mr Byrne or by Mr Byrne; still unclear, because adults love envelopes. Five: whistle appears in your schoolbag. Six: mystery girl leaves note about cupboard room. Seven: Cormac saw Mrs Phelan’s red coat in cupboard room. Eight: mystery girl warns you to run while investigators ask questions. Nine: red thread tied to whistle.”
“Ten,” Nell said. “Finn’s sandwich is probably contaminated by crime.”
Asha wrote it down.
“You did not have to write that,” Finn said.
“All observations matter.”
Across the yard, Mrs Phelan stood under the awning talking to Mr Keane. She wore a navy tracksuit today, not the red coat. Her whistle hung on a lanyard. Plastic. Ordinary. She looked tired and cross, but teachers often looked tired and cross when surrounded by children, so that proved nothing.
Finn remembered Mrs Phelan after the semi-final, clapping him on the shoulder, telling him his save in penalties had been brave. He remembered her carrying the first-aid kit. He remembered Brendan Byrne saying something to her near the stage, low and sharp. He remembered her face going pale.
“Maybe the coat was just there,” he said.
“Coats don’t commit crimes,” Asha agreed. “People wearing or moving coats do.”
The bell rang.
Nell handed the whistle back reluctantly. “This is exciting but in a bad way.”
“Do not tell anyone,” Finn said.
“I’m seven, not leaky.”
“You told Mum about the Christmas biscuits.”
“You had icing in your ear.”
Fair.
After school, Finn did not go to the old cinema alone. He went with Asha, Nell, and—unexpectedly—Cormac Byrne, who appeared by the gate and said, “I’m coming,” in the tone of someone daring the universe to argue.
“No,” Finn said.
“Yes.”
“You told me to leave it alone.”
“I’ve revised my position.”
“That was my line.”
“It was useful.”
Asha looked between them. “This partnership has the emotional stability of a shopping trolley with one bad wheel.”
“I am not partners with him,” Finn and Cormac said together.
Nell beamed. “You sounded married.”
Both boys recoiled, which delighted her.
The old cinema crouched at the end of Harbour Lane, boarded up except for Aunt Tess’s bookshop in the front corner, where paperbacks filled the windows and a sign said YES, WE HAVE THAT BOOK YOU PRETENDED TO READ. Above it, the marquee sagged. The missing letters made the old film title read THE LAST SEA, which Finn thought was better than whatever it had originally been.
Aunt Tess was inside arguing with a customer about whether a book with a dragon counted as suitable for a nervous child. Finn ducked past the window before she spotted him.
The side alley was empty.
Rainwater dripped from the gutter into a bucket someone had placed there months ago and then spiritually abandoned. The plastic heron stood by the bookshop door, cracked head tilted, looking guilty. Finn checked inside. Empty, of course.
Asha pointed to the wall where the first note had been pinned. “There.”
Another paper waited beneath the same loose brick.
Cormac reached for it.
Finn slapped his hand away. “No.”
“I can read.”
“Congratulations.”
Asha snatched the note before they could start a second public incident.
The message was shorter this time.
BLUE TIN. SCREEN THREE. BRING THE WHISTLE. TRUST NO ONE WHO SAYS THIS IS FOR THE CHILDREN.
Nell frowned. “Adults say that all the time.”
“Exactly,” Asha said.
Cormac looked up at the boarded side door of the cinema. “Screen Three doesn’t exist anymore.”
Finn turned. “How do you know?”
“My dad looked at buying this place.”
“Your dad wants to buy everything.”
“Only things with roofs and leverage.”
Asha stared at him. “That was accidentally insightful.”
Cormac shrugged, uncomfortable. “Screen Three was turned into storage years ago. There’s a way in from Tess’s shop cellar.”
Finn did not like that Cormac knew a secret about his aunt’s building. He liked even less that Cormac looked genuinely afraid.
“We are not breaking into my aunt’s cellar,” Finn said.
The side door creaked.
All four of them jumped.
It had not opened much. Just enough to show darkness and the smell of dust, damp, and old carpets. A strip of yellow fabric was tied around the handle on the inside.
Nell whispered, “I vote we tell a responsible adult.”
Asha looked at the note. “The responsible adults are currently suspects, obstacles, or emotionally compromised.”
“I don’t like when you use categories.”
“Categories save lives.”
Finn took out the brass whistle. It sat in his palm, cold and accusing. The red thread trembled in the breeze from the open door.
He thought of his father at the kitchen table, surrounded by receipts and shame that did not belong to him. He thought of Cormac’s scared face in Mr Keane’s office. He thought of the girl in the yellow hood, running through rain with the blue tin clutched like treasure or proof.
“We go in,” Finn said.
Nell made a squeak. “I withdraw my vote under protest.”
“You stay by the door.”
“No, because if you vanish, Mum will ask where you are and I am morally opposed to lying under pressure.”
“You lied about the biscuits.”
“That was art.”
Asha took a torch from her bag because of course she had a torch. “Single file. No touching mystery wires. No shouting unless bitten by something with legal standing.”
Cormac peered into the dark. “What does legal standing mean?”
“Bigger than a mouse.”
They slipped inside.
The corridor beyond the door was narrow and smelled like wet cardboard. Old film posters peeled from the walls: heroes with faded faces, monsters with cracked teeth, a woman in a red dress pointing at something no one could see. Their footsteps stirred dust. Somewhere deeper in the building, water dripped with patient menace.
Finn led with the whistle clenched in one hand.
At the end of the corridor, a sign hung crooked from one nail.
SCREEN 3.
The door beneath it was open.
Inside, the old cinema screen had been torn down. Shelves lined the walls, stacked with boxes from the bookshop, broken chairs, paint tins, Christmas decorations, and a cardboard cut-out of a detective with no head. In the centre of the room sat the chipped blue tin.
No girl.
No footsteps.
No sound except the rain and Nell breathing through her nose like an anxious pony.
Finn approached the tin.
Asha whispered, “Careful.”
He lifted the lid.
Inside were three things: a brass key labelled HALL OFFICE, a photograph of Mrs Phelan’s red coat hanging in the cupboard room, and a receipt printed with his father’s digital signature.
Across the receipt, in black marker, someone had written:
YOUR DAD DID NOT SIGN THIS.
Underneath lay one final note.
I CAN PROVE IT. BUT BRENDAN BYRNE KNOWS I SAW HIM.
A floorboard creaked behind them.
They turned.
The girl in the yellow hood stood in the doorway, rainwater dripping from her sleeves. Without the shadow, Finn could see she was not a stranger after all. She was Mara Phelan, Mrs Phelan’s niece, the quiet girl from Ballycross who had transferred for two weeks last spring and then disappeared again before anyone learned where she lived.
Her face was white.
“You shouldn’t have brought him,” she said, looking at Cormac.
Cormac bristled. “My dad didn’t—”
Mara cut him off. “Your dad is outside.”
The building went silent around them.
Then, from the corridor, Brendan Byrne called pleasantly, “Children? This is a dangerous place to play.”
Finn understood then that the mystery had crossed a line. It was no longer hidden in notes and whispers, no longer tucked inside a lunchbox beneath bad ham. Brendan Byrne had come to the old cinema himself. Adults did not do that for childish nonsense. They did it when something mattered enough to frighten them.
Asha turned off the torch. Darkness folded over the room. Nell grabbed Finn’s sleeve. Cormac stopped breathing so loudly that Finn almost forgave him for existing. Mara Phelan stepped backwards, one hand still on the doorframe, eyes fixed on the corridor where Brendan’s voice waited, friendly as a knife wrapped in ribbon.
Finn closed his fist around the whistle. For the first time since Saturday, it did not feel like evidence against him. It felt like a promise from every child who had ever been told to keep quiet for the sake of adults.
He lifted it to his mouth.
Asha hissed, “Finn, no.”
But he had already learned the third rule of mysteries: sometimes the safest thing to do with a secret is make it loud.
The brass whistle screamed through Screen Three, sharp enough to wake the dead films in the walls.
For one second after Brendan called out, nobody moved. Then Nell did the most Nell thing possible: she sneezed. It was small, squeaky, and explosively honest. Brendan’s footsteps stopped in the corridor.
Asha’s eyes went wide in the dark. Cormac looked as if he might either faint or apologise, and Finn was not prepared for either. Mara grabbed the blue tin and shoved it against Finn’s chest. The metal was cold through his jumper.
“Back way,” she mouthed.
“There is no back way,” Cormac whispered.
Mara gave him a look of pure contempt. “There is if you actually look.”
She moved behind the torn screen frame and pulled aside a hanging strip of black fabric. Beyond it was a gap between two storage shelves, narrow and filthy, leading towards a square of grey light. Aunt Tess had once said old buildings were like old people: full of passages no one respected until there was an emergency. Finn silently promised to respect every elderly building forever if this one got them out alive.
Brendan’s voice came again, closer now. “Cormac? I saw your bike outside.”
Cormac flinched as if the words had struck him. That was when Finn stopped thinking of him as only an enemy. Enemies did not always look like villains in stories. Sometimes they looked like boys who had been taught loyalty meant standing beside the wrong person until the floor gave way.
Finn pushed the whistle and notes into the blue tin, snapped the lid shut, and crawled after Mara into the gap. Dust filled his nose. Nell followed, muttering prayers, threats, and a request to all future mysteries that they provide cleaner escape routes. Asha came next. Cormac hesitated last, caught between his father’s voice and the dark little passage where the truth was going.
“Cormac,” Finn whispered.
The other boy looked at him.
For once, Finn did not insult him.
Cormac crawled into the gap.