Black Duchess – Maria Lobzova

To save her children from enemies, the medieval witch Louise is forced to turn them into vampires. Her enemies kill her before she has time to complete the ritual. The witch’s children become somnambulistic vampires and have been feeding on the locals for many years.
The situation is changing in the 21st century: her incarnation, the russian journalist Nora, arrives at Louise’s castle. Now, through a double, the witch’s spirit can return to the world of the living and complete the black ritual.