Easily the best season, so far.
100% on Rotten Tomatoes.
A surprising and intense finale.
The series follows Superintendent Ted Hastings (Adrian Dunbar), D.S. Steve Arnott (Martin Compston) and D.C. Kate Fleming (Vicky McClure) as they lead an investigation into the corrupt actions of Sergeant Danny Waldron (Daniel Mays).
Every actor is great. Hawes was nominated for the BAFTA TV Award for Best Actress award for this role.