But exactly how true is the horror movie?
In an interview last summer before the Spanish horror film’s release, director Paco Plaza clarified that while actual events did inspire Veronica, it’s not a blow-by-blow account of them.
Veronica was originally titled Ex expediente, and he told Cineuropa of the switch: “Because El expediente referred to a supposed real case: it made you think that we were reconstructing an investigation, and then the film sort of became something that wasn’t really directly linked to the facts that inspired it.
“It’s based on a very popular event, Vallecas, but at the same time it also draws on elements from another event that also occurred in Madrid in 1992.
“As the story was distancing itself so much from the original event, it didn’t seem right to call it El expediente.”
He added: “There is a nod to reality: an intention to locate the film in a specific space and time, in Spain before the Olympics.
“It deals with the transformation from girl to woman, and I think that year the country underwent a transformation of its own, into modern times: it was a turning point as it marked the end of Post-Francoism and the beginning of a settled democracy.”
The Vellecas case which Plaza mentioned took place in 1991; when a young girl died shortly after playing with Ouija boards, apparently then terrifying her parents with a chain of supernatural events around her childhood house.
Veronica started out with a 100% rating on review aggregator Rotten Tomatoes but this has since slipped to around 82% as some English-language critics criticise it.
It’s also split audiences: the more people claim it’s the scariest thing they’ve ever seen, the more claim it’s “overhyped”.
Veronica is streaming on Netflix now.