Blood. Bones. And the Paris catacombs.
In Paris, a renowned art historian is found dead in her bathtub with a fatal stab wound in her gut, leaving the authorities to question if it was a suicidal publicity stunt—or murder. An Algerian student goes missing and Louie finds her bones in the catacombs.
Konstantine, notorious leader of a Florentine gang, does what he can to assist Louie in her search—until he is asked to choose between his loyalty to her and the men who rely on him.
Then as Louie investigates these two cases for answers and a connection, more women disappear.
So the hunt for a new killer begins…