Nightsiren, playing at Fantastic Fest, is a folk horror gem surrounding a young woman’s return to a small village she fled as a child. Directed by Teresa Nvotová and written by Nvotová and Barbora Namerova, the film is another slow-burn style, filled with analysis of patriarchal oppression. Filled with atmospheric suspense and tense acting, Nightsiren keeps you on your toes as to what is real and what is superstition.