Tom Grant, disgraced government agent and functioning alcoholic, is assigned a simple job. Take Isabella Wirth from a banquet before a contract killer puts a bullet in her head. An opportunity to redeem himself. A babysitting job. For one night. Isabella, code breaker at a secret intelligence agency is assigned her own job. Seduce Tom and lure him to a hotel room. In the space of twenty-four hours, a secret Isabella has kept for ten years unravels, and they discover their pasts are intrinsically connected. Pursued through the streets of Paris, Tom and Isabella must evade a relentless killer in a deadly game of cat and mouse, while seeking revenge in an effort to reconcile the past.