When her married lover and fellow police officer Sean Hardacre goes missing, DI Hannah Laing launches a manhunt.

Hannah and her new partner Billy start investigating the Mimica family. But a shocking discovery makes Hannah want to pull the plug on the entire operation.

Stefan discovers that Christian has been meeting with Hannah. Will Christian be forced to take drastic action to protect himself?

Traumatised by what he's done, and hopelessly tangled up in the undercover investigation, Christian takes a trip with Davor that will reveal everything he needs to know.

With Christian out of action, Hannah and Billy are at a loss - and it begins to look like the Mimicas will get away with their crime.

In a dramatic final showdown, the undercover police team attempt to bust the Mimicas' drug smuggling operation. But they're in for an unpleasant surprise.