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.
Hannah and Billy try to uncover the leak at Police HQ which resulted in the deaths of several of their colleagues. When Hannah’s obsession concerns her boss, she and Billy pursue their own “unofficial” investigation. Christian and Bianca find that their hideout isn’t as safe as it seems. Under pressure to move her cocaine, Dubravka meets with an intermediary who makes her a tempting offer.
Dubravka’s daughter is unceremoniously shipped back to the UK like a piece of cargo. As punishment for her desertion, she is imprisoned in the family home. Meanwhile, Nicky is back on the hunt for Christian, but he is one step ahead of her. Hannah and Billy uncover the leak at police headquarters and strike a deal with them to reveal all. Davor’s body is found and Dubravka swears revenge.
An assassination reveals that corruption in the force runs much deeper than anyone thought. Hannah and Billy start to suspect their boss may be involved. When she discovers Bianca has been sent home, Hannah fears for her son. Billy uses his global connections to try to get to Christian before the Mimicas can kill him.
Hannah decides to take justice into her own hands, but a message from Bianca stops her in her tracks. Hannah and Billy make a breakthrough in their case linking police corruption to the Mimicas and share it with their boss. Billy tries to secure evidence linking Nicky to Dubravka but his mission leads him down a dangerous dead-end trail.
The thrilling crime drama concludes. With all parties determined to secure a better future for their families, the war between Hannah and Dubravka reaches a bloody conclusion.
