The original title for this movie was "The Possession." The title was later changed after the filmmakers found out about the traditional Irish folk song "Lovely Molly" in post-production.
Director Eduardo Sánchez's son Lucas and daughter Bianca make cameo appearances in the wedding footage seen at the start of the film.
This film was initially going to be shot in a much rougher documentary style.
Alexandra Holden was nominated for the 2012 Fright Meter Award for Best Supporting Actress for her performance.