Originally Posted by Defective Detective
"Well you see I've kept my word, and done for the one I said I would.
I suppose you took notice of what I said.
These other letters were not written by me at all and has some one been kind enough to give me the name of "Jack The Ripper". I'll accept it and act up to it. Look out for the next.
P.S. You can't trace me by this writing so its no use on the police stations"
Okay, here's a question: if this letter writer had never before written a letter, when did he say he'd do "for the one"? What did he say that we were to take notice of?
This letter obliquely suggests another communication of some kind in its first lines, or so it reads to me, and yet denies having made any previous communication just a few sentences later.
This communication you reference does initially appear to have some internal contradiction.