Streaming now on 麻豆社 iPlayer.
Steve Arnott realises the target in his anti-corruption case is the city's top detective.
Luther, back from suspension, must solve a seemingly perfect double murder.
James Delaney returns to London to claim a mysterious legacy left to him by his father.
A writer with a looming deadline is tempted into a night out with a friend.
Amir and Faryal reflect on their past over a rare date night.
