Warning from an Anonymous Friend is a written note found in The Brigmore Witches.
But be warned, poor fortune has followed me every step of the way since laying hands on this thing, and I am overjoyed at the prospect of leaving it here and being done with it. May it treat you better than it has me.
And if some unlucky local has stumbled upon this wicked bone, heed these two warnings: As I have said above, poor fortune will find you. But more importantly, this is intended for delivery to the most dangerous man in the Empire. If you are in possession of something he wants, you may count your remaining hours on one hand.