Very few areas of HQ are accessible by these newcomers, a fact Luther had insisted upon when it was decided this strange phenomena be redirected to HQ in the first place. Their enemies were certainly not few, and there was no reason to trust these new people with their secrets. Luther took it upon himself to police the halls, making sure all these people knew their place and stayed out of their areas. These people couldn't be trusted.

The vampire is a shadow, unseen unless someone wanders into a place they don't belong, at which point the shadow begins to tail them, only speaking when he believes they've gone too far.

"Areas are restricted for a reason."