During his speech about the Dagmar family, Dave (Monte Markham) notes that the home's first owner sold corpses to the "University over in Essex County" - a reference to author H.P. Lovecraft's fictional Miskatonic University, which was located there.

Numerous characters in this film are named after characters or people associated with the Lucio Fulci film The House by the Cemetery (1981), which this film was inspired by.

The burn make-up on the Dagmar family ghosts took about two hours to apply and one hour to remove.

Larry Fessenden did his own stunts for the séance sequence.

One telltale sign the film was shot in a town close to the U.S.-Canadian border: the Molson Canadian beer light shades in Buffalo Bill's bar.

The role of Jacob Lewis was specifically written for Larry Fessenden to play.

Paul Burress, who plays Billy Dee, is actually the pastor of a local church in the town where this movie was shot on location. Moreover, his daughter Zorah Burress plays the ghost girl Fiona Dagmar.

The 1970's era clothes were purchased at thrift stores.

The role of Anne was specifically written for Barbara Crampton to play.

Throughout the film the characters frequently drink "B&J" Whiskey. This can be seen as an homage to "J&B Scotch"- a real life brand of alcohol that was often seen in Italian horror and exploitation films during the 1970s and early 1980s. Even the labels look very similar.

Art director Sean Hughes can be seen in photos as the Sacchetti's deceased son Bobby. Moreover, Hughes was chosen to be Bobby in said photos because of his shaggy haircut.

In Spain was only released in Barcelona (Phenomena) for 1 day in subtitled version. The film was watched by 45 viewers.

The vintage cars were lent to the filmmakers by locals in Shortsville, New York.

The smoke in the bar Buffalo Bill's was added digitally in post-production.

During the credits, around 1:20:00, there is a bonus scene.

Two of the film's central antagonists are veterans of Star Trek television series - Susan Gibney played Doctor Leah Brahms on The Next Generation episodes "Booby Trap" and "Galaxy's Child" and Commander Erika Benteen on the Deep Space Nine episodes "Homefront" and "Paradise Lost", and Monte Markham played Pascal Fullerton on the Deep Space Nine episode "Let He Who Is Without Sin...".

The weather was freezing cold throughout the shooting of this film.

This movie was shot in the middle of February.

The scene where the townie woman/bartender is stabbed in the neck by Barbara Crampton and blood sprays all over the white tarp is a nod to Dario Argento's Tenebrae, where a woman has her arm severed and blood sprays all over the white wall.