These dark glasses were worn for decades by one of the Geun brothers
, who are suspected to be demons summoned from the darkest reaches of the Nevernever
. One of the three brothers was killed (his corporeal form was destroyed, his psyche returned to the dark realm), and these glasses were taken into evidence by the Sacramento Police Department, office of Special Investigations.
The members of Capitol Investigations believes that using the glasses might give them an arcane link to the other brothers in order for Alex
to create a tracking spell.