A Deadly Plot Walkthrough
This will be given to you by Djikstra automatically upon completion of the ‘A Matter of Life and Death’ and ‘Now or Never’ quests.
To begin the quest, you’ll need to head over to the Passiflora brothel, which is helpfully indicated for us with the objective marker in the northern part of the main island of Novigrad.
Enter at the ground level and make your way to the far left corner to find a changing room for the Strumpets. In here the Madame will speak with you briefly before revealing a secret door. Enter the door and climb the stairs to the top for a scene with a few of our favourite NPCs.
Agree to help them out and the quest shall begin.
Exit the brothel and make your way to the northern side of the bridge with the Border Post fast travel point on it. Speak with Gregor, the NPC marked with the objective icon for a conversation.
When you are free to leave, make your way across the bridge to the south and follow the road here and turn right at the first fork you come across. Continue until you reach an abandoned cart. Fight off any Wolves in the area at this point.
Switch on your Witcher Senses and you should find evidence of a struggle on the road. Leading west from here is a trail of shoes that you can follow. At the end of the trail you’ll find a Troll who will initiate a conversation with Geralt.
Following your chat, head over to the nearby cave and enter it. If you haven’t been here before there is a ‘?’ marker on the map directly over it. Move through the cave and keep your eye on the left hand wall for an alcove – in here you’ll find a group of three chests containing Diagram: Superior Ursine Armour, Diagram: Superior Ursine Gauntlets, Diagram: Superior Ursine Trousers and Diagram: Superior Boots.
Continue through the cave until you reach the Trolls inside for a scene. During the conversation here, you can either resolve the situation peacefully by choosing the lower option each time, or with brute force by choosing the top options.
Whichever way you choose, you’ll be able to leave the cave. Make sure you look around as there are three chests in the Troll cavern that contain some goodies (I found Manuscript Page: Vampire Oil, Manuscript Page: Enhanced Relict Oil and Diagram: Arbitrator).
Exit the cave and escort your new buddy back to the abandoned cart on the nearby road.
After one final conversation, the quest will be complete.
Note: for completing the quest, you’ll earn 25XP.