There has been a significant increase in the production of horror films in Spain since the turn of the twenty-first century. This chapter addresses a particular production unit, the Barcelona-based Fantastic Factory as part of the increasingly important Filmax group of companies, with the explicit aim of making genre films that would have an appeal beyond the Spanish market. Genre, as an approach to cinema, has long been established as a key critical perspective within film studies. Its first major impact was as part of an intellectual move to displace author-based approaches in the 1960s, in favour of ones that more clearly acknowledged the wider social and cultural influences upon, as well as the industrial nature of, cinema. Even though the name of the Fantastic Factory has been retired after the release of Beneath Still Waters and The Nun, Filmax have continued their commitment to horror in its broadest term.