Berengar's Blade
Side quest
Kaer Morhen suggested level 27 
On the world map
From the journal
In one of the now-unused bedrooms of Kaer Morhen Geralt found a note left by Berengar, a witcher who had once been his companion and colleague. The note indicated Berengar had been working on forging an exceptional sword called Tor'haerne. The note was sparing in its details, so Geralt decided to ask Vesemir if he knew something more on the subject.
The elder witcher told Geralt the story of how Berengar had tried to forge a silver sword with extraordinary characteristics. All his attempts, however, went awry and he lost the diagram while trekking downriver to kill a chort.
Geralt finished what Berengar had started: he followed the same route, killed the monster and retrieved the Tor'haerne diagram.
