Line of Duty
8.30pm, Sunday, SoHo
The third season of this British police thriller pits AC-12 against their most dangerous adversary yet, thanks to the fatal shooting of a criminal suspect by an armed response unit. Although the unit claim they acted in self-defence, AC-12 gather evidence that suggests a deliberate killing. ‘‘A complex tale of corruption that is confusing and addictive,’’ wrote The Guardian’s Sam Wollaston.