Julien Baptiste travels to Hungary to help the British ambassador, Emma Chambers, find her missing family. When a body is found, the pressure is on to save Emma’s two sons.

With Alex dead Emma’s only hope is to find her other son Will. And when Julien and Zsofia look to Kamilla and her husband, a new lead is uncovered and a dramatic discovery is made

As Julien and Zsofia investigate Far Right politician Kamilla Agoston, Emma finds a lead on Alex’s computer that takes her and Julien to a shocking and bloody discovery.

Julien and Zsofia track down the tattooed man but he gives little away. Things escalate when the police receive a hostage video, and Emma takes drastic action for her family.

With Will safe, Emma and Julien hope to discover the identity of Gomorrah, but instead discover another attack is planned. Now, the pair must race against the clock to prevent it.

Reeling from Will’s escape, Emma and Julien must do everything they can to stop the next attack. If they can follow the clues and find Will, perhaps they can succeed.