The Night of Long Fangs
Main quest
Toussaint suggested level 47 Blood and Wine
On the world map
From the journal
It was painfully clear the audience with the duchess would not be a pleasant one. For Geralt and Regis had failed to establish Dettlaff's whereabouts, though not for lack of trying. Matters, alas, quickly took an even more tragic turn. When Geralt failed to deliver Syanna to the lover betrayed, he fulfilled his threat and sent down upon Beauclair and its environs a plague of horrid beasts. The witcher immediately resumed his efforts to find and confront Dettlaff.
Geralt had decided - Dettlaff could not be considered harmless. True, he was doubtless a sentient creature as well as Regis' close friend - but no. The witcher would resolve matters with his blade. To do this, Geralt would need to force Dettlaff to reveal himself, then to fight. And this in turn required him to find one of only a handful of ancient vampires remaining in the world. And the only one who could help him with the latter was that legend of the Beauclairois boheme, Orianna.
Geralt heeded Regis' advice and would seek to resolve the crisis through peaceful means. To do so, he would need to fulfill the vampire blackmailer's demand and free Syanna. He now needed to establish where this troublemaker was being held. The witcher suspected he could extract this information from Captain Damien de la Tour, the duchess' confidant in such matters.