According to local legend, the ghosts of tortured slaves still haunt New Orleans' Lalaurie House. For The St. Francisville Experiment, a paranormal researcher, a self-proclaimed psychic, a Louisiana historian, and a filmmaker were given digital video cameras for one night in the house to document whatever they saw. Prior to the film's release, Trimark Pictures declined to release the names of the filmmaker and the participants or to clarify whether the film was a documentary or a fiction in the guise of a documentary, like The Blair Witch Project.
~ Mark Deming, All Movie Guide