Hugo Marston, head of security for the U.S. Embassy in Paris, puts his life in danger when he investigates the murder of a celebrated artist, all the while fending off an assassin looking to settle an old score against him.Hugo Marston accompanies his boss, US Ambassador J. Bradford Taylor, to the first night of an art exhibition in Montmartre, Paris. Hugo is less than happy about going until he finds out that the sculptures on display are made from his favorite medium: books. Soon after the champagne starts to flow and the canapes are served, the night takes a deadly turn when one of the guests is found dead. As if being murdered at an art show weren't bizarre enough, the killer has theatrically displayed the body among the exhibits, just yards away from everyone.Paris detective Camille Lerens asks former FBI agent Hugo to stay at the crime scene and use his profiling expertise to help solve the murder. Very quickly, he discovers that someone at the party has a false identity, and not everyone there that night was invited. While Hugo is unraveling this mystery at the museum, his best friend Tom Green appears on Hugo's doorstep battered and bleeding, a barely-living message from an old enemy who has revenge in his heart and a target on Hugo's back. With a murder to solve and his own life in danger, Hugo knows he has no time to waste as one killer tries to slip away, and another gets closer and closer.