My eyes burned, tracing the same columns of voltage data for the third time in twenty minutes. Across the console, Luke sat equally still, his chin propped in one hand, staring at the frozen waveforms on the secondary monitor. Hours had melted away since we’d isolated the matching blip on the control board's power rail. Hours more had passed since our shared-ground theory had quietly died on the test mount. "Clocking out," I announced, pushing my chair back with a dull roll across the concrete. Luke blinked, shaking himself out of the trance, and rubbed a hand over his jaw. "Yeah. Staring harder isn't making it talk." He stood, rolling his shoulders with a tired pop, and began shutting down his bench. "We'll hit it fresh Monday. Try not to dream about false signals." "No promises," I said, zipping my laptop into my bag. "You, too. Don't go looking for loose brackets in your sleep." "I have standards, Mercer." He reached for his jacket, that familiar, easy smile touching his mouth. "See you Monday." "Monday." My apartment was quiet when I unlocked the front door on Friday evening. The entrance lights came up in their usual warm, low sequence. "Welcome home, Claire," NELL’s level voice dropped from the kitchen speaker. "Would you like the standard evening lighting?" "Forty percent, please," I said, kicking off my shoes and setting my keys in the tray. "Adjusted. Your refrigerator log indicates the leftover chicken should be consumed tonight to avoid unnecessary food waste." "Threatening me with expiration dates is manipulative, NELL." "Accurate inventory tracking is not manipulation," NELL noted smoothly. "Fine. Warming the chicken." I spent Friday night in comfortable, low-effort isolation. The weekend stretched ahead as a blank slate of uninterrupted personal hours, and I already had a target: integrating an ultra-low-power air quality sensor into the frame of my bathroom mirror. It had zero practical utility. I simply wanted to see if I could display live particulate counts right beside my reflection without running an external power brick. Saturday morning arrived bright and clear. The automated blinds lifted on schedule, flooding the spare room with cool sunlight. By noon, my workbench was covered in micro-tools, fine solder wire, and a tangle of stripped jumper leads. The sensor was microscopic, requiring a magnifying lamp and a steady hand. My phone buzzed against the edge of the wood. [Luke Hayes]: "Are you currently wrestling with something profoundly unnecessary, or are you actually taking a weekend off?" I laughed under my breath, wiping my hands on a cloth, and picked up the phone. [Claire]: "I am currently teaching my bathroom mirror how to read pollen counts. What are you doing?" [Luke Hayes]: "My brother, Landon, convinced me to help him assemble flat-pack furniture. It is less 'assembly' and more 'an exercise in structural despair.'" [Claire]: "The sacred test of sibling bonds. May your hex wrench stay true." [Luke Hayes]: "Don't jinx it. We are on step four and it looks like a futuristic hamster cage." Ten minutes later, he sent a photo of Landon sitting cross-legged on a carpet, holding an unidentifiable wooden slat while staring at an instruction booklet with profound confusion. I sent back a close-up of my micro-controller board, neatly soldered and no larger than a postage stamp. [Luke Hayes]: "That looks suspiciously like witchcraft." [Claire]: "It's called precision, Hayes. You should introduce Landon to the concept." By four in the afternoon, the project had hit a wall. The sensor was refusing to hand off data to the display driver without dropping packets every six seconds. I checked the continuity, re-flashed the board, and verified the voltage rail. Nothing. I picked up the phone, venting purely out of habit: [Claire]: "The sensor is dropping its handshake. It is being intentionally hostile." [Luke Hayes]: "Sounds like a hardware problem." [Claire]: "Naturally. Everything is a hardware problem to a hardware engineer. It's obviously timing in the firmware." [Luke Hayes]: "If you need a second pair of hands, I'm almost done with the hamster cage." My thumb hovered over the keyboard. I typed: Come over. I looked at the two words on the screen for three seconds. The cursor blinked. I hit backspace twice, clearing the line. [Claire]: "If you stop at a hardware store, send me the model number on any low-profile contact sensors you see. Otherwise, stay away from my firmware." [Luke Hayes]: "At some point you have to admit the mirror won, Mercer." [Claire]: "The mirror will submit to protocol." Sunday passed in the same easy rhythm. I managed to stabilize the data feed, coaxing a clean readout onto the corner of the mirror glass, ran laundry, and went for a long walk through the park while the afternoon cooled down. Luke sent an updated photo around dinner: Landon proudly standing beside a completed, slightly lopsided wooden bookshelf that still looked somewhat like an animal habitat. [Luke Hayes]: "Behold. Finished. We only had three screws left over." [Claire]: "Spare parts are a design flaw, not a victory." [Luke Hayes]: "It holds books. That's a passing grade." [Luke Hayes]: "Your mirror has made you insufferable, Mercer." [Claire]: "The mirror is a triumph of local telemetry." [Luke Hayes]: "Scientifically unverifiable. Lab Seven tomorrow. Bring evidence." [Claire]: "See you tomorrow, Hayes." By nine, I had set my badge beside my keys on the counter and slotted my travel mug into the dishwasher rack. The apartment was settled, quiet, and entirely back in order for the work week. My phone was still unlocked on the island, sitting open to our text thread. I picked it up, tapped the screen, and sent one last message: [Claire]: "Tell Landon the middle shelf still looks structurally suspicious." A reply popped up before I reached the hallway. [Luke Hayes]: "He says you're officially banned from helping with the next one." [Claire]: "I wasn't invited." I set the phone on the nightstand charger, turned off the bedroom lights, and went to sleep.

Chapter 10: Off the Clock