The Chosen One by Sam Bourne

In the game of Washington politics, the stakes are as high as they get - and not everyone is prepared to play by the rules... Newly-elected US President Stephen Baker is flying high after signing a popular bill giving new rights to victims of domestic violence. But in Vic Forbes he has a ruthless enemy who is in possession of a crucial piece of knowledge that could destroy his career. When Forbes is found murdered the conspiracy theorists go into overdrive. Did the President order his killing, or was it his opponents? Ex-Presidential advisor Maggie Costello is called in to investigate. As she digs further she finds evidence of a conspiracy that reaches back into history and the heart of the US establishment...