Harry now know who is the killer and not very happy about it.
He didn't discovered who he is, as the killer revealed himself through one of the victim.
He was a killer that was caught before and escaped from jail 4 years ago.
And he has a old friend still in jail, also caught by Harry. A scary guy who is almost out. He is a rapist who deliberately got women pregnant and forced them to have children with him.
So.... Harry is now hunting a killer who knows about Harry and knows a lot of about killings.
The problem is, this killer is more about how he kills than who he kills.
So far, the writing is good and the story is fine. It is progressing nicely and Harry didn't act out of character for being a happily married man.