There was not even dust in that spot on the shelf. Which means it has been empty a long while.

• Old PriestNot even the temple kept a copy of the old records. Why trouble yourself to raise that dust?
  CassianI am not the one who raised the dust. I only saw the empty space, and that space is where someone erased something.
• The Queen Mother's PhysicianWhat used to stand in that spot... I learned long ago that not asking is how you live longer.