A Witch's Tears Become Poison

Katrin is a count's daughter who also possesses the abilities of a spirit medium. One day, Katrin discovers the truth: the fortune-teller 'La Noir,' who can even predict people's deaths, is actually murdering people with poison to make her predictions come true. She also uncovers her husband's plot to use La Noir's poison to murder both her and her father. Will Katrin truly be able to eliminate the witch's poison and get revenge on her husband, Jerome?