The director wanted to employ the ancient summoning ritual in the scene of invocation of the demon, but the actors refused it out of fear.
Ivana, Marko and Sasha, who play the central roles in the movie, met the day before the start of the filming.
All dialogues are improvised by the actors.
The mention of Sava Savanovic, a Serbian vampire, is a tribute to the first Serbian horror film "The She-Butterfly".