"Zara Fischer used to be a deadly assassin but now she’s trying to live a quiet life with her partner, FBI agent Ash Eden and his child, Beth. But when you’re a former government asset, and an ex-detective, it’s never long before your skills are once more in demand… Zara’s quiet life is shattered when Ash goes on the hunt for a serial killer nicknamed Night Beast and is violently attacked himself and hospitalized. Zara wants only to track down the Night Beast and exact revenge."