Rylee Adamson is a Tracker: she can locate any missing person by focusing on their essence, and no magic can touch her. Still haunted by the disappearance of her little sister years ago, she has made it her life's mission to retrieve children taken by supernatural forces. Operating outside the law and at war with the FBI agent assigned to bring her down, Rylee navigates a hidden world of werewolves, vampires, witches, ogres, and things far worse.

Rylee Adamson is sharp, stubborn, and entirely without patience for people who underestimate her. She lives by a strict code — children come first, always — and her immunity to magic makes her both invaluable and uniquely vulnerable to purely physical threats. Her gruff exterior hides a fierce protectiveness for every stray, supernatural or otherwise, who ends up in her pack.

Across ten books, Rylee's salvage missions escalate from desperate child rescues to a world-ending war against a demonic force called Orion. She builds an unlikely chosen family from supernatural outcasts, discovers the truth about her missing sister, and faces the ultimate sacrifice to seal the supernatural Veil forever. The series charts a relentless, action-packed journey from a lone mercenary tracker to the reluctant savior of the world.