The Last Clean Signal

Inside, she had rebuilt it.

If anyone ever opened the case without entering the three correct passphrases, the E375 would erase itself — and her — in a puff of molten silicon.

The waveform bloomed — a clean, tight signal at 14.203 GHz. The E375’s onboard decoder chattered, then fell silent.

“You and me,” she said quietly. “One more round.”