A vicious killer stalks the former head of computer security for the Microworld Software Empire in San Francisco. An ill-fated clandestine British military mission into Northern Ireland to capture a notorious international assassin known only as 'Cromwell' becomes a murderous trap. A protest in Washington DC as the President of the United States opens an exhibition of Irish culture turns volatile. These simultaneous incidents set off a chain of events that endanger the stability of the world economy as well as the fragile peace agreement in Northern Ireland declared five months before. American Secret Service Agent Lia Blaine and Major Robert Garrick of the elite British Special Air Services find themselves thrown together into a violent maelstrom of corruption and treachery that leads up into the White House.