City of Dead Men

City of Dead Men is a horror film directed by Kirk Sullivan, marking Sullivan's directorial debut, and starring Diego Boneta, Jackson Rathbone and María Mesa. The film tells the story of Michael, an American traveler that arrives in Medellín where he meets Melody, who introduces him to a radical group of young men called "The Dead Men" who live in an abandoned psychiatric hospital.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.