How to get into Vernworth Castle and find evidence of Disa's misdeeds.
Completing the Disa's Plot quest in Dragon's Dogma 2 is one of the first things you need to do after entering Vernworth and meeting Captain Brant.
Once you reach Vernworth, you'll speak to Captain Brant and after a brief talk with him he'll ask you to meet him at the Stardrop Inn at nightfall.
When it's night, you'll find Brant at the Inn's bar. Walk up to him and he will lead you to a secluded table.
To start the Disa's Plot quest select the Tell me of the Queen Regent option
Accept the option and you'll start Disa's Plot but you can only complete this quest at night. You will need to pass some time.
wait until nightfall and sneak into the palace through the rear entrance to get into the main office to find evidence of Disa's plans.
head to the Palace in the Noble Quarter in the southern part of Vernworth. Use the quest icon on your map to guide you
Here you will meet a guard called Sonia who will be ready to help you. Follow her to the rear entrance to the Guardhouse.