Rise of the Harbingers
A Changeling female, and thus whoever she can fool you into believing she is.
There is not much known about Savi, if that is even her real name.
some say that as a child her family was part of a cult that worshiped the shadows as spirits of their ancestors. even going so far to have part of their souls placed within the shadowfell.
or swear that she was instead a young orphan who learned street smarts under the wing of the leader of the local thieves guild just before the town guard violently purged undesirables from the city.
others think she was forced into service of the Nightstalker assassins who molded her into a hidden agent of death and intrigue.
but at the end of the day who knows if all, or any of this is true, after all almost everything she is, is a lie.