Detective Fiona Fitzgerald is an unlikely force for justice in Washington, D.C.'s predominantly male police force. As a senator's daughter and top investigator in the homicide division of the Metropolitan Police Department, Fiona maneuvers between two vastly different worlds, moving quickly from opulent state galas to gritty crime scenes. Born into the elite social circles of the nation's capital, and armed with intimate knowledge of the true face of the political establishment, Fiona is determined to expose the chicanery concealed within the highest echelons of the American political aristocracy.

When a string of inexplicable murders rocks the hallowed streets of central D.C., Fiona finds herself charging through the shadows of a mysterious conspiracy. Faced with an investigation with no leads and a rising body count, Fiona's reputation as a top investigator is called into question.

At the brink of professional ruin, an encounter with the eccentric yet charismatic Thaddeus Remington III at his museum-like mansion sends Fiona hurtling headlong through a whirlwind of clues. Where once the desperate detective blundered through traceless footsteps of a triple murderer, the answers to her case now seem to be whispered from bloodstained graves of fallen presidents. Fiona stands ready, her finger on the trigger, as an assassination plot decades in the making is about to change history forever.