Decimus is seeking some peace of mind in his final hours. His wife has passed away during the siege and he'd like to you retrieve her favorite ring from his house in Crow's Nest for the quest Eternal Commitment, in hope that it will help him find her soul in the Hall of Echoes.
You can mindread Decimus for 22500 exp to learn that his Shadow Archer Bracers are in a storage chest in the basement. This allows you to request the key from Bernard upstairs. "Bernard put some of my stuff in a chest downstairs: says it's safe. But I really hope he didn't misplace my Shadow Archer's Gloves."