Robyn Hunter is used to being a lone wolf. Orphaned at a young age, she's clawed her way through life in the foster care system and overcome the shocking transformation that all Lycans must go through at puberty. After a brief stint in the military, her wanderings bring her to Chicago where she's drawn to a rumor about the wealthy and elusive Stone family. When she hears of the Lykos Institute, her attempts to join the shadow operations as an agent/tracker are thwarted by her own kidnapping.

She inadvertently falls prey to what L.I. operatives have been trying to defeat for years... a mysterious evil that's causing Lycans to vanish without a trace. But Robyn is a fighter, and despite the tortures she suffers, her will to survive and desire to again be free lives on.

That courage and determination pay off when she's able to escape, but her efforts also result in her becoming a target of the very organization she'd hope to work for. When L.I.'s top assassin, Lucian Stone, sets his crosshairs on her, she must find a way to stay alive long enough to clear her name, and put a stop to her kidnappers' plans for good.