The shadow of death

Harry marshal is the Criminal Inspector.
He has spent five years of his life finding a killer who roams the streets of London and kills people.
He has spent five years of his life finding a killer who roams the streets of London and kills people.
He spent 5 years of his life to find the murderer that turns the streets of London and the man stabbed Hara.

"What surprised the police was that everyone who was killed by the killer was guilty."
The killer wants revenge on Harry
What happens if Harry falls in love with a killer?
What happens when the killer mask is removed from his face?
Does Harry know who the killer is?