Leo backed away from the screen. “I swear, I just googled ‘contpaqi descargar.’ I clicked the first link. It wasn’t the official site.”

When she opened the program, the screen didn’t turn green. It turned silver.

That’s when her younger brother, Leo, burst through the back door of the shop, his phone held aloft like a torch. “I found it!” he yelled. “The solution!”

Elena looked at the envelope, then at the blank screen. She knew she should be terrified. But for the first time in months, the numbers on her father’s ledger added up perfectly.

“Leo,” Elena said, her voice tight. “This isn’t accounting software. It knows about the stolen drill from last winter.”

Don Arturo peered at the screen. “Contpaqi? I haven’t heard that name since we switched to cash-only in 2008.”

“No, listen,” Leo said, shoving his phone in her face. The screen read: CONTPAQI – Descargar – Versión de Prueba Gratuita.