Some time later, Graven found himself slipping into the wide-open door of an elevator shaft, sliding down the ladder, and slipping out onto the next sublevel.  The gas-mask killed his sense of smell, but his hearing and vision were still sharp.  He stalked the investigation team from a distance, skulking from shadow to shadow amongst the great machines and smoke-filled halls.  He couldn't smell them, but even when he couldn't see them, he could hear them.  He snarled slightly at the noises from above.<br/><br/>A construction team probably couldn't stop him from leaving if he wanted, but the risk of leaving witnesses...he didn't want to contribute to the mess that was already being created.  It wasn't too long before the process became boring.  He figured there were at least two human females ahead, but he didn't want to take his mask off to catch their scents.  Fuck only knows what kind of crap the humans would put in the air.  The various medical devices bored him.  He'd walk through a room a few minutes after they'd left, and be compelled for them to move on again.  He couldn't really rifle through things at the risk of giving himself away.  There were all kinds of blades and so forth that might have proven interesting in other circumstances, but there just wasn't much to do with them here.<br/><br/>He sighed.  Stumbling across the bodies came as a shock, and his first instinct was to think they were an illusion.<em>No, dummy, you just still can't smell anything.  Gasmask, remember?</em>He sighed behind the obnoxious device and checked them, after the others had left.  Well, they were dead.  Killed by something.  Probably something big.  That was hardly ideal.  Still, it'd find a different type of customer in him.  He resolved that the best way to handle it would be to let the security goons up ahead stumble onto it, if it was even still down here.  See what their weapons did to it and then decide whether to engage.<br/><br/>Nonetheless, the whole thing was boring as hell.  And then...there was screaming.  This was agonizing, because he knew that sound would lead him straight to some clues.  But if he wanted to play this right, he had to stay back and let the humans play bait for him.  Waiting for them to actually perk their ears up and notice was like an eternity.  He nearly collapsed in relief when they finally stopped dithering and went to investigate.<br/><br/>Twenty, thirty meters behind them, Graven cut through the shadows like a phantom.  The day was finally starting to get interesting.  He didn't want to jinx the whole deal, but he started to form the thought that he might even get to have some fun.