The Drake of Blades has a spy within the Legion Zero, Captain Regilus, but he has not made contact for a few weeks and she fears he may have succumbed to the effects of the Blood of Coldharbour; a foul daedric brew that members of Legion Zero are forced to drink.
At his sewer hideout within the Elven District, I discover Regilus is holding out against the corruption of the brew thanks mainly to antidotes and willpower, though he admits he is slowly losing the battle. He has recently learnt that in their search for a particular relic the Daedra have found a key to an ancient door somewhere beneath the city. If we were to simply steal this key then the daedra would know that we work against them, so he suggests a little espionage. He wants me to forge a copy of this key to replace the real one, thus giving us more time to learn about this relic that Molag Bal seeks.
A Xivkyn named Zolgar the Brutal guards the key in a counting house and whilst the captain distracts him I swap the key for the fake one. After a brief conversation however Regilus rather unnecessarily stabs Zolgar. Perhaps it was the corruption taking hold that led to so rash an action; the Drake had warned that he had seemed more angry and erratic of late. Yet I think it may have been something more; not so much an impetuous act of aggression, more a contrived act of desperation. I believe he has just had enough of his struggle, for he would know better then anyone that with the killing of the Xivkyn he betrayed himself.
Once I had the key and his final report for the Drake he downs a bottle of poison, killing himself. At his end there seemed to be something more he wanted to say to the Drake, but could not find the words. I imagine its a very lonely thing to be a spy, to have all your friendships to be no more than deceptions.
When I informed the Drake of his death It is clear she too felt more for Regilus then she herself was able to say; one cannot mask such heartache. Behind those eyes I saw a woman trapped within her own pain, suffering such sorrow yet knowing not how to express it, and thus she cannot escape it.