The plan is so complex, the target so well protected that the three snipers have to rehearse the killing in the seclusion of the Arizona desert.

Cole Howard of the FBI knows he has only days to prevent the audacious assassination. But he doesn''t know who the target isOr where the crack marksmen will strike.

Former SAS sergeant Mike Cramer is also on the trail, infiltrating the Irish community in New York as he tracks down Mary Hennessy, the ruthless killer who tore his life apart.

Unless Cramer and Howard agree to co-operate, the world will witness the most spectacular terrorist coup of all time . .