The White House connection
(Book)

"One by one, members of the secret IRA splinter group known as the Sons of Erin are being murdered. The consequences are greater than anyone realizes. For in these actions lies the destruction of two governments--and the fall of the Irish peace process. Former IRA terrorist Sean Dillon and U.S. presidential aide Blake Johnson have been recruited to stop this unknown assassin whose motive--and identity--is unfathomable. Quickly, quietly, before all hell breaks loose. But they are already too late, for in the Manhattan night, a silver-haired woman is smiling. She pulls a gun from her purse, and steps into the darkness. Four down, she thinks. Only three to go ..."