If Michael Mann made a movie in Iran it might look like this: a ferocious drama-thriller in which a haunted, morally ambiguous cop faces off with a despairing drug lord. We begin with a barnstorming chase sequence in which an officer runs after a drug dealer holding a bag of heroin; the scene climaxes with a shockingly nasty end for the dealer, setting a gruesome tone for the rest of the film. The director is Saeed Roustayi, whose Leila’s Brothers was in competition at Cannes last year; this is in fact his previous film. Payman Maadi is police officer Samad, who is losing the “war on drugs”; gangsters have murdered the son of his subordinate, so his team’s dedication to bringing down the drug dealers has a new fanatical energy. Navid Mohammadzadeh is Naser, a drug kingpin who is already feeling his dominion crumbling.