The Riddle of the Seventeenth Floor

Elena found the strand of hair caught in the ventilation grate—long, dark, unmistakably belonging to the CEO's wife. Three months of chasing whispers through the glass-walled corridors of Mercer Tech had led to this: a single filament caught in the HVAC system of the secure server room, where no one without clearance should ever be.

She'd been a spy in the corporate sense for seven years, since the divorce left her needing work that paid better than teaching English and offered less heartbreak than dating. Corporate espionage, they called it. Mostly it meant reading emails she wasn't supposed to read and pretending to get coffee.

But Marcus Mercer was different. He sat at the apex of his pyramid like some latter-day pharaoh, surrounded byExecutives who bowed and scraped and never quite met his eyes. And like the sphinx of legend, he spoke in riddles—at board meetings, in the all-hands addresses, even in the cafeteria line. "What walks on four legs in the morning, two at noon?" he'd asked Elena once, smiling like he knew something she didn't. She'd mumbled something about evolution. He'd laughed, a sound like stones rattling together.

Now she knew what he was really asking: Who's been selling our source code to competitors?

The hair was answer enough. Elena checked her watch—2:17 AM. The building hummed around her, a sleeping beast. Tomorrow she would present her findings. Tomorrow she would tell Marcus that his wife had been in that server room twelve times in the past month, using a keycard she shouldn't have possessed. Tomorrow she would watch a marriage collapse and a company tremble.

Tonight, she pressed the hair between thumb and forefinger, a dark thread against her pale skin, and thought about how easily things unraveled. How the most powerful men built empires that could be undone by a single strand of evidence, a moment of carelessness, a wife who'd stopped loving him somewhere between the penthouse and the shareholders' meeting.

Elena sealed the hair in an evidence bag. The sphinx would have his answer at dawn. She hoped he'd asked the right question.