Anna Dressed in Blood duology

ANNA DRESSED IN BLOOD: Cas Lowood has inherited an unusual vocation: He kills the dead. So did his father before him, until he was gruesomely murdered by a ghost he sought to kill. Now, armed with his father's mysterious and deadly athame, Cas travels the country with his kitchen-witch mother and their spirit-sniffing cat. They follow legends and local lore, destroy the murderous dead, and keep the future and the past at bay. When they arrive in a new town in search of a ghost the locals call Anna Dressed in Blood, Cas expects the usual: a girl who was murdered, now trapped in her own home, lashing out at anyone who dares to enter. What he finds instead is a girl entangled in curses and rage, a girl who has killed every person who has stepped into her deserted Victorian home. But for some reason, she spares Cas's life. GIRL OF NIGHTMARES: It’s been months since the ghost of Anna Korlov opened a door to Hell in her basement and disappeared into it, but Cas Lowood can’t move on. Anna sacrificed herself so Cas could live, and Cas is convinced she’s still out there—somewhere. He’s seeing her everywhere: sometimes as she was when she was alive and sometimes as she was when she was a ghost. But mostly he sees her in pain, being tortured by the things she saved him from. Cas’s friends are worried about him, and his mother is terrified. They want him to stop looking for Anna and start living his life. But Cas can’t. He has to find her. He has to save her. Even if it means going to Hell and back.