The Testament of Sherlock Holmes Hints

Chest

  • 1 of 3: Look to the left of the bishop's desk for a large armoire with a prominent picture on it.
  • 2 of 3: Look to the right of the picture to see a sort of safe with a puzzle board on it.
  • 3 of 3: Click on its hand icon to bring up a puzzle screen, then immediately exit it since there's nothing you can do with it yet.