Mobeen tries to find answers to the hardest question of them all. Is the heroin trade in West Yorkshire the best kept secret or is his community simply turning a blind eye to what’s happening in its midst? With access to the inner workings of the drugs trade, Mobeen comes face to face with the scale of the business and the lengths people go to keep it hidden. Meanwhile, a life sentence for a notorious gangster sheds new light on the night Yassar died and makes the need to act against the drug trade more urgent than ever.