The fascinating and fatal Carmilla enrolls as a student in an exclusive girls' finishing school and proceeds to wreak havoc among pupils and teachers alike. Among those who fall victim to her striking and sensual beauty is the school's new English teacher, who at first refuses to credit the ugly rumors about her true nature. But, following the death of a colleague and student of the occult, Giles Barton, and as the toll among the girls mounts, he is reluctantly forced to recognize Carmilla's guilt ...