A dark voyeur is the spirit of someone who died in its reflection. The slain individual must have had some familiarity with the mirror; which can be as simple as it being in his home or possession for more than five years. The spirit of the slain is unwilling to leave this life and retreats to the mirror in order to watch life as it happens after his death. Since wealthy folk are normally those who own expensive mirrors of great proportion, the dark voyeur's appearance matches this, albeit with an undead twist.