Whitney had gone ahead after Dave gave the word. The hallway wasn't much different than the last, but there was certainly more interesting things. Dave went on ahead and saw Pen and Whitney duck down a side hallway just up ahead. 
"Guys - let's have a look down here," he heard Pen call to the rest. He followed them and saw them standing in front of a significant-looking door, something that would surely have the security the previous doors lacked. 
"Seems like we've hit a dead end," she said nervously. "So, does anyone know how we can get in? Dave shrugged himself. While he was certainly very good at climbing into places he was not supposed to be, and hiding from overweight security officers, picking locks was not a skill he possessed. As if on cue, Ula, the incredibly quiet one that Dave, surprisingly, had never talked to, walked in front of him towards the door. She reached into her hair and took out a couple pins, and knelt in front of the lock, and after a few moments, the locked clicked and Ula shoved the door open. 

"Tadaa," she muttered matter-of-factly. Dave was impressed. He made a note to at least get to know her. Terraline, and Alvira, who had since joined them, stepped into the room beyond, Dave following behind as Alvira pushed open the door for the others. Absolute white was before him.

"What the hell?" Dave asked incredulously. There was, of course, absolutely nothing there. He began to walk forward, footsteps echoing throughout the space, looking around, but seeing nothing.

"Is this like a storage space or something?" he asked to nobody in particular. "Why lock an empty room if you've got nothing to hide?" He shrugged and turned back to the entrance and to where everyone else was. The moment he exited the room, however, he nearly lost his balance as a sudden rush of unusual lightheadedness washed over him, forcing him to lean against the wall for a moment. He pushed himself back up to standing, breathing heavily, the sense of fatigue not quite having gone away.