Since the film's release, Misha Collins has said that he regrets participating in it. He said that he was unaware of the infamy and strong emotions in Canada surrounding the crimes. After a telephone conversation with a victim who managed to escape, he now routinely tells people not to watch the film, especially when it comes up at Supernatural (2005) conventions. Occasionally, fans ask him to sign their DVDs of the film.
The film was shot entirely in the United States, with an American cast and crew. Nobody in the Canadian film industry wanted to be involved with it.
Laura Prepon had to dye her hair blond for this film. As a result, her character in That '70s Show (1998) had blonde hair for the show's last two seasons.
Toronto filmmaker Peter R. Simpson initially bought the rights to Invisible Darkness, one of two books written about the Bernardo/Homolka case, by Canadian writer Stephen Williams, in 1994. He abandoned the project due to public outcry.
Except for Tammy Homolka, the names of the victims were changed because of their ages. The circumstances of their deaths remain the same.