Intelligence man Callum (Jim Sturgess) is really struggling to get Dieter to play ball and with only a few days left to complete his mission, he is under pressure from every corner.
But then Kathy (Phoebe Fox) gives him a list of names to help with her war crimes investigation. Could she also prove useful to him in return, or will he have to take a massive risk to get results?
Meanwhile, mysterious Lindsay-Jones adds some extra intrigue when he makes an urgent request to Callum and also offers up some very surprising information.
But it’s Callum’s increasingly troubled brother, Victor (Freddie Highmore), who is the biggest problem, causing ructions when he turns up at the hotel…