A ladder was bolted to the Wall. It stretched from the very bottom of Inside to just above level four. Using it would make climbing to the air ducts above the third level easier. Except for two problems. A two-meter space gaped between where I stood on the edge of level two and the ladder. To use the ladder, I would need to traverse the thin I-beam connecting level two to the Wall. If I slipped, I would plummet about ten meters. The drop might not kill me right away, but if I broke my legs no one would know where to find me.

Breaks in the ladder were the second problem with the route. Someone long ago had cut off portions of the ladder as if they hoped to limit access to the upper levels. I had strung chains between the breaks, but climbing them required a great deal of upper-body strength.

No sense wasting time. A tingle of apprehension brushed my skin. I moved onto the I-beam. The beam was a little wider than my foot. Balancing on it, I placed one foot in front of the other with care. Once I mounted the ladder, I climbed until I reached the chain. Taking a deep breath, I wrapped my legs around the slender metal links and pulled myself up hand over hand to the next complete section of the ladder.

By the time I reached the next rung, sweat soaked my uniform and coated my palms. As I stretched for the bar, my fingers slipped.

I started to fall. Three wild heartbeats later, I managed to stop my descent by gripping the chain. When my body stopped swinging in midair, I grinned at the near miss. My pulse tapped a fast rhythm, matching my huffs for breath. I waited a moment before returning to the top of the chain. My second attempt to transfer to the ladder worked.

Navigating through the ductwork, I found the near-invisible hatch for level three and climbed inside the air shaft, searching for the sleeping quarters in Sector F.

Broken Man had said a duct above his rooms. Logic suggested he wouldn’t use a water pipe, too messy, or an electrical conduit, no space. He had been an air controller so it stood to reason I would find the disks, if they existed, in the air shaft. If.

I crawled through the shaft above the rooms, counting. Small rectangles of daylight warned me when a room was occupied, and I took extra care to be quiet. Stealing glances into the quarters as I slipped by, I spotted uppers working on their computers.

I usually avoided the populated sections. One sneeze and I would be permanently assigned to the solid-waste-handling crew. The crap cleaners. Nothing like the threat of unclogging those pipes to keep scrubs in line.

When I reached number three-four-two-one, I peered into the darkness below. The lack of light noteworthy. Inside had two light levels. Daylight for when people were awake and working and bluelight for sleeping. Bluelight was also used for temporarily unoccupied areas where, as soon as a person entered, the daylights would turn on. In the barracks, the bluelights stayed on all the time.