The Silent One/Silent as the Grave is a Quest in Divinity: Original Sin II. We read a report on a demon obliterating a child's soul during a failed exorcism.
- Undead Cat
- Possessed Girl
- Spirit of Brother Morgan
- Find a way to help the possessed girl
To acquire this quest, you need to get in Bloodmoon vault #2 on Bloodmoon Island. (To open the statue, you need to let one character with Scholar tag to decipher the book Ornate Hymnal, it turns to The Taming of Holy Fire. This book can be found at multiple locations, including the archive on the northeast of the island, and a Black Ring member near the tree.)
Use the hymn to destroy the statue, enter the vault then cast Spirit Vision. Persuade the spirit of guardian to open the stone gate. (if you fail to persuade him, you need to use Source Vampirism on him, the skill is learned in the quest Powerful Awakening)
Persuade or kill the undead cat to approach the possessed girl. Talk to the girl, you need a high persuasion skill or you won't be able to advance the quest. You can then teleport her back (Through dialogue) to Lady Vengeance for later treatment.