The Marching SeasonDuring the first uncertain years of the Northern Ireland peace process, three simultaneous terrorist attacks in Belfast, Dublin and London shatter the hope that the bloodshed is finally over. The perpetrators are a new terror group called the Ulster Freedom Brigade. And they have one goal: to destroy the peace process. Michael Osbourne, hero of The Mark of the Assassin, has quit the CIA, bitter and disillusioned. But when the President chooses his