Set in London, each episode is a self-contained story, starting with a news report, then following the team of three detectives as they investigate the circumstances the crime. The cases themselves are hard-hitting with contemporary themes, such as the search for a soldier with PTSD, a murder that has been made to look like an assisted suicide and the gang rape of a young teenager.

S5 Episode 3
S5 Episode 2 : The Enemy Within: Part 2
S5 Episode 1 : Episode 1
S4 Episode 4 : Rough Justice
S4 Episode 3 : Ricochet
S4 Episode 2 : Revenge
S4 Episode 1 : 4.1
S3 Episode 4 : Episode 4