Elena’s heart thumped. She printed the error. Then she took her red pen—the sacred red pen of the accountant—and drew a violent, satisfying line through the false entry on her paper planilla . The next morning, Mr. Conti waddled in with a latte. "Elena! Did you approve the planillas?"

Elena fired up LedgerMind. The interface was cheerful, with a little cartoon robot stamping "APPROVED!" on entries. She pulled up Ana M.'s time punches.

They audited the temp agency. Ana M. was a ghost—a fake ID created by a night supervisor named Rivas, who had been siphoning overtime pay for six months. The machine had never blinked.

She ran her finger down the column. Gomez, J. – 12 extra hours. Perez, L. – 8 hours. But then she saw it. Line 89. A new temp worker, "Ana M." – 40 hours of overtime. In one week. That was impossible. That was illegal.

But Elena trusted paper. She trusted the smell of ink and the soft scratch of her pen. Tonight, she was doing a parallel run—old school versus new school.

He paled. "But LedgerMind says it's perfect."