Twisted Firestarter is one of the first Side Quests in the game. Blacksmith Willis’ forge has been burned down and you have to find the culprit.
There were only a handful of nonhumans in White Orchard. One of them was the dwarf Willis, an excellent blacksmith whose wares attracted peasants from far and wide. Sadly, his forge had burned to the ground shortly before Geralt arrived. Willis suspected the fire had been started deliberately and asked the witcher to investigate this alleged arson.
Following contains quest spoilers. You’ve been warned
Use your Witcher Senses to look behind the forge for clues about the arsonist.
Go behind the burned down forge and turn on your Witcher senses to find footsteps a bit southeast of the house.
Follow the trail using your Witcher Senses.
As you examine the steps you will get the next objective. Keep following the tracks until they end at the river.
Look for someone with wounds dealt by drowners using your Witcher Senses.
Following the blood trail you’ll end up in a house in the village.
Talk to the suspect.
Napp is your suspect and he’s in the back of the house. You can resolve this situation in several ways. You will get 25XP at first and reward for either choice amounts to same. IT only depends what you are comfortable with, because if you turn in the culprit he will be hanged by the Nilfgardians, and you get access to dwarf’s wares and improved forge.