Red Troop is offered an unofficial black bag heist to steal a list of terrorist targets from a vault. Controlled by an American diplomat, the deadly list is held in a virtually impenetrable security centre, accessible only through sewers and an old wartime bunker. With help from expert safe-cracker John Magnusson, all except Macalwain agree. But if they are caught, the SAS will disown them.

Red Troop is called to a siege at a religious commune where Gulf War veteran Omega is holed up with his disciples after shooting dead two police officers. Henno is reluctant to attack with children in the house, but then Omega turns his guns on a follower. Going through an underground culvert, the SAS must act silently and decisively. But things are getting messy in their personal lives...

The SAS face losing their leader when Dempsey is taken captive while protecting Overseas Development Minister Nicky Strong on a Top Secret visit to Tblisi, Georgia. Red Troop is scrambled to the rescue but they unwittingly play into the hands of the kidnapper. In such dangerous terrain the odds are stacked against them - and Dempsey. And Henno has a personal score to settle.