Something is stalking the corridors of Tom Winters' school, searching for blood.
Is it a ghost? Some legend from the past?
13-year-old Tom unpicks an increasingly dark mystery, only to find himself at the heart of it.
He carries the Kontakion Gene and the ruthless Canon Lockwar is willing to torture and kill to get his claws on it.
Tom, his completely annoying not-friend Sorrell and his dorm mate Jack are caught up in a fight to save lives now, in the past and the future.