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

Hannah and 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; Christian might have to take drastic action to protect himself.

Traumatised by what he's done, and hopelessly tangled up in the 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.