Description
I'd like you to ask one of our allies here in the Order of Mathos, but I believe I've heard that name thrown around. I think that Darkblade might be the name of an order member who is working with the Guardians.
Ask Dragomir Rakovic about my suspicions. If you locate a Darkblade, confront them.
Upon completion
You say this Darkblade fellow was doing something right above the heads of the Guardians? The only surprise is that anyone chose to trust any royal family with a name like 'Darkblade'. That's something from the song of a pithy bard.