- Talk to Serge Arcole at the boathouse
- Add potion to 4 kegs
- Search counting house for clues as to where Miranda is being held
- Get vervain
- Find Lady Miranda Arcole
Meet Serge Arcole at the boathouse to give him the items he requested (at the conclusion of the previous quest). He has created a sleeping potion from the puffball caps.
He has asked the Vestige to help him incapacitate the smugglers by putting the potion into the drinking kegs around the estate (marked on the map). Once that is finished, search the counting house for clues as to where Miranda's being held.
Be careful of the guards and sentries around the property (holding torches and patrolling the area). They can see through the disguise. Also, when the potion is being added to the kegs, the Vestige becomes exposed and attacked. Be sure to obtain a new disguise from either the slain brigands or smugglers or from the laundry baskets near some of the NPC spawn locations.
In the counting house, Lady Miranda's steward Elbert Lanier assists you with finding Miranda and clarifying the situation. The Midnight Union was actually hired by Miranda to protect her from her husband, who threatened to kill her if she did not give him her family treasure. The "sleeping potion" was actually poison. Elbert implores you to get the supply he ordered of vervain, located on the east beach. He also gives you the key to the manor house to rescue Lady Miranda.
If you take too long, Miranda is dead when you arrive. If you hurry, you can confront her husband and get the antidote to Miranda and save her life. Either way, you will get the reward.
- Recondite Sash