During the preparations for his wedding, Peter (Itay Tiran) accidentally stumbles on a pile of human bones in a makeshift grave, only to be possessed by dybbuk, a demon of Jewish legend.
We've seen weddings explored as a chaotic setting in cinema numerous times before, but there's something uniquely compelling and wholly original about what Wrona creates with Demon.
Ultimately, what lingers most strongly in Wrona's impressive film is less the actual aberration, and more the examination of how people as a group react to it being in their midst.
Tonally the film recalls Andrzej Żuławski's shrieking psychodrama Possession, though the key to that movie was its inexplicability and Wrona's movie, with its conventional horror backstory, is much less perplexing.
A fistfight between the bridegroom and one of his guests is the least bad thing that happens at the wedding of Piotr (Itay Tiran) and Zaneta (Agnieszka Zulewska).
