Jack Travers, SIS agent is travelling through London to a meeting with his French and American colleagues when he becomes involved in a terrorist act outside Buckingham Palace. A jihadist fundamentalist is attempting to decapitate one of the sentries guarding the palace. Jack manages to dis-arm the terrorist and save the guardsman. From this encounter, an idea is formed. Jack, together with his old pal from the French Secret Service and Joe Merriman,...