The mirror principle sat in his chest like a held note. Sloane's twelve is a mirror. Add the eleven, keep the tail, and the twelve is whatever the hundred lacks β ninety-nine minus the tail.
He knew what came next. Everyone in the arena knew something came next. The boy turned the notebook to a clean page, squared his shoulders, and picked up the pencil.
Now β the arithmetic.
Chapter 25: The Arithmetic
Eli sat back on his heels.
Eleven numbers lay in his notebook in his small, careful handwriting, each one circled, each one fought for and won: 17, 64, 8, 91, 33, 55, 29, 76, 41, 83, 12. Fifty-four minutes gone. The red numbers on the arena clock read 5:47 remaining, though time had stopped feeling like minutes a long while back. It had become texture instead β the sweat along his hairline, the cramp in his right hand, the stethoscope's metal chill where it pressed his collarbone.
He lifted his head, and the arena came rushing back into focus. Ten thousand people. The cameras. The host, Diane something, hovering at the edge of the stage with her microphone, her face a mask of live-television disbelief. Somewhere to his left, behind the glass of the control booth, Wallace Grant was on his feet. Eli couldn't see him. He could feel him.
He wasn't supposed to talk. Nobody had said he couldn't, either β the rules had been read aloud by the notary with the gravity of scripture, sixty minutes, one attempt, no electronics, and nothing anywhere about silence. The analysts in the TV booth had been narrating his every breath for the better part of an hour. The whole world already knew he was mapping the wheels. And Otis's voice was in his head, clear as river water: "A confession, Eli. When you hear one, you say what you heard."
He stood up.
The crowd made a sound like a wave pulling back from shore. Diane the host actually took a step backward. One of the camera operators swung his lens around so fast Eli heard it whirr, and somewhere in the booth a producer screamed something about staying on the wide shot. Eli walked to the front of the stage, the notebook open in his hand, and for a moment he was aware of exactly how small he must look β a twelve-year-old in a too-big button-down shirt his mother had ironed that morning, holding a dead locksmith's stethoscope and a school notebook, facing down an arena.
He wasn't afraid. That was the strangest part. His hands had stopped shaking the moment he'd stood.
"This safe has twelve wheels," he said. His voice came out thin on the arena speakers, and a technician somewhere adjusted something, and then it came back fuller. "Everybody knows that. Eleven of them are independent. I just spent fifty-four minutes finding where each one clicks, and I wrote down all eleven numbers. That's how locks work. That's how this one works, at least."
The crowd was so quiet he could hear the air conditioning.
"But the twelfth wheel is different." He tapped the notebook. "Henrik Sloane, the man who built this safe β my grandfather studied his locks his whole life. And he wrote something down. He said Sloane's twelve is a mirror. Add the eleven, keep the tail, and the twelve is whatever the hundred lacks β ninety-nine minus the tail."
In the booth, the safecracker-analyst went white. Eli would see the replay later, on Tiana's phone, fifty times. The man just whispered, "Oh my God," into a live microphone.
Eli bent over the notebook where everyone could see. The camera above the stage dove down. He read the numbers aloud, slowly, letting each one land.
"Seventeen. Sixty-four. Eight. Ninety-one. Thirty-three. Fifty-five. Twenty-nine. Seventy-six. Forty-one. Eighty-three. Twelve." He looked up. "Add them up and you get five hundred and nine. Keep the tail β that's nine. And ninety-nine minus nine is ninety."
He said it plainly, like a math-class answer.
"The twelfth wheel is ninety."
In the commentary booth, everything broke at once. The play-by-play host made a sound that was not a word. The safecracker-analyst β a man who had spent thirty years opening vaults for insurance companies and had told the audience an hour earlier that what Eli was attempting was "theoretically adorable" β stood up so fast his chair tipped over backward. He pressed both palms to the glass and stared down at the stage, at the boy, at the notebook, and whispered, "Oh my God," into a live microphone, and the whisper went out to forty million people.
Eli held the notebook up so the overhead camera could see it. The numbers were iron. Seventeen through twelve, five hundred and nine, the tail nine, ninety-nine minus nine. He thought of Otis at the kitchen table, hunched over this same arithmetic, saying, "Sloane was a snob, boy, but an honest one. Twelve wheels, and the twelfth is the mirror. Nobody looks for the mirror."