Working as a Hound - tracing illegal spells back to their casters - has taken its toll on Allison Beckstrom. But even though magic has given her migraines and stolen her recent memory, Allie isn't about to quit. The police's magic enforcement division asks her to consult on a missing persons case - but what seems to be a straightforward job turns out to be anything but, as Allie finds herself drawn into the underworld of criminals, ghosts and blood magic.