Beat cop Cassie Hunt thinks she can hide from her paranormal heritage as a blood witch, until a murderer begins ritualistically taking fang, fur, blood and bone for a massive spell, beginning with Cassie's warlock uncle. Cassie vows to catch her uncle's killer – a vow that walks her back into her werewolf ex fiancé's arms. When the murderer tries and fails to kill Cassie using vampire assassins, Cassie herself becomes a vampire. After her blood witch mother goes missing, Cassie must use all the magic in her blood and fangs to defeat the killer.