Watching Series On BBC America

I watch the series on BBC America.I saw the first episode of the new season and I have questions. Please forgive me if I mistake some plot points with canceled series Copper.I seem to remember there was a main villian who was a corrupted Chief Inspector from another district.He even made the Elephant Man suffocate to death because he witnessed a murder.What happened to that storyline with that villain? Did I miss something?







That's just my two cents.