The note was a police report from the early victorian era that read:
August 21, 1853, the infinious Chimney Sweeper Killer has claimed yet another family. Reports show that, like all of his past killings, came from the chimney of this home, and did away with the family by slitting their throats while they were asleep. The family he most recently murdered had three children and a single father. That sick bastard.
Then, he stole all the valuables the family had and escaped from where he came from; though the chimney. This is the tenth family this monster has murdered. And I'll be damned to let him kill off another.