A rich country house that, before her wedding, seemed to Marianne almost like a fairy-tale palace—turned out to be similar to Bluebeard’s castle. Her young husband died. She is a wealthy heiress; after two years of burdensome marriage, freedom awaits her. But Marianne hesitates to change anything—she feels that the real nightmare is only just beginning. They suspect her of murdering her husband. And the midday demon that her legal husband feared is somewhere nearby. But who is he? A supernatural being or a real man thirsting for revenge? Trying to save her life and sanity, Marianne discovers traces leading to the solution of the mystery. They are connected to an ancient legend about Lilith—the treacherous seductress driven mad by her fatal beauty.