Natalie Chandler's friend hospital sister Logan reports suspected foul play following several deaths on her A and E ward,the last being when a young girl was given a fatal dose of prescription drugs. Chief suspect young Dr. Grant proves to be an unqualified impostor but he implicates elderly,pain-killer addicted colleague Dr. Austen,who was in charge when the other patients die...

New partner Sam Casey joins a grieving Ronnie to find out who shot Matt dead. Sam suspects an accomplice of the recently convicted Mark Ellis but the trail ultimately leads to Jamaal Clarkson,a youngster whose brother Kieran was murdered in 2003,though the police closed the case as a suicide. Jamaal believes they were not interested as Kieran was black and tells Ronnie he knows...