As a null, Scarlett Bernard possesses a rare capability to counteract the supernatural by immediately neutralizing spells and magical forces. For years she has used her present to scrub crime moments of any magical traces, helping the powerful paranormal areas of Los Angeles stay hidden. But after LAPD detective Jesse Cruz uncovered Scarlett’s magic formula, he made a bargain with her: solve a particularly grisly murder case, and he’d stay silent about the city’s unearthly underworld. Therefore when two witches are located dead a couple of days before Christmas, Scarlett is once more strong-armed into assisting the investigation. She soon discovers a connection between the murders and her previous coach, Olivia, a null who mysteriously converted into a vampire, who harbors her own sinister agenda. Now Scarlett must revisit her unpleasant past to find Olivia – unless the blood-drenched present claims her life first.