As the hit BBC police drama continues, DCI Roz Huntley (Thandie Newton, Westworld) is suspected of deliberately ignoring key evidence to close a career-defining case. Called in to investigate, AC-12's Superintendent Hastings places DS Kate Fleming undercover inside Roz's team, while DS Steve Arnott applies pressure from the outside. As suspicions mount, AC-12 comes under threat. 6 episodes, 400 minutes, 2 DVDs, SDH. Mature audiences.