Classroom76x -

He had laughed, assuming a joke. She hadn't.

But Maya Chen was already moving. She walked to the wall switch without asking permission and flicked it down. The room plunged into darkness save for a single rectangle of pale light from the windowless door's bottom gap. In that darkness, Elias heard it: a soft, rhythmic tap-tap-tap , like a fingernail on glass. But there was no glass. Only the steel door. classroom76x

The students were all looking at him now. Eleven pairs of eyes, utterly patient. He had laughed, assuming a joke

Elias locked Classroom 76X. He returned the key to Dr. Varma's office, placed it precisely on her desk. "Samira Jahangir," he said. "The absent student. What's her story?" She walked to the wall switch without asking

Elias shrugged and began the geometry lesson. The students were brilliant, unnervingly so. They solved Euler's formula in their heads. They corrected his minor slip on edge count before he could finish the sentence. But by the twenty-minute mark, he noticed something wrong. The clock on the wall—a plain, battery-operated school clock—was ticking backward.

"The lesson plan says to finish the review sheet," said the girl with the purple hair. "We should do that. Before she comes back."