"[7] According to Raphael Montes, one of the writers, Globo gave total freedom to the staff: "I remember a discussion in which we started to throw ideas and we said that this would never be aired, but they did film it!

"[7] The creator and director José Alvarenga defined the series as a crossing of various genres; ranging from police thriller, horror, terror and suspense to romance.

The series was inspired by the first season of True Detective, as well as other similar themed shows such as The Walking Dead, American Horror Story, Supernatural, The Hunger Games and Lost.

It involved the knowledge of how to react to different scenes, like amputating a leg in cold blood, being strangled or finding an aberration, an unusual experience for Brazilian actors who were more used to drama and melodrama.

[11] An international version for Hispanic channels is also expected to be produced in Spanish, with Argentine filmmaker Daniel Burman as the director and Bruno Gagliasso starring as a transgender character.