Col McHugh tests Lou's loyalty after she fails to warn him of a police raid.
DI Lou Slack attempts to betray the drug baron she has worked with for 20 years after a family crisis sparks a moral shift.
Better cast and creatives tease 'very dark thriller' about ... - BBC
A desperate attempt to bring Col down fails to go as planned, leading Lou's family to take drastic defensive actions.
Lou and Vernon's plans to take Col down risk triggering a gang war, while curiosity grows regarding Lou's behavior.
