Whilst out on a rowboat with his wife Louise, John Haloran has a heart attack and dies. She casts his body overboard and hides his death telling the family he left on an urgent business trip. Louise's main concern is that she can only hope to inherit part of his family fortune if he's still alive. The Halorans are a strange family. They are still grieving over the death of the youngest daughter, Kathleen, who drowned in a pond when she was a young child. The family hold an annual ceremony of remembrance, on the anniversary of her death. But this year someone is wielding an ax...intent on murder.Written by
The Most Terrifying Screen Experience Of Your Life! A Brand New Concept in Motion Picture Shock! A Thrilling New Creation of Terror Thru Sight and Sound, Filmed Entirely in the Shock-Packed Process of Dementia 13! See more »
This film was originally going to be titled simply "Dementia." The "13" was added because it was discovered that the title "Dementia" had already been used earlier for a 1955 film, Dementia (1955). See more »
When Billy and Kane are walking around the pond, the boom mic falls into view. A little later, the shadow of the boom mic operator is visible on Kane. See more »
You're an intelligent woman, Louise. You notice things, size people up. You know when they're happy and know when something's bothering them. I want you to do me a little favour.
Keep that microscope you've got built into your eye off of me!
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The Slingshot DVD is a fabricated 3D version of the film that is viewable in razor3D system. This is an artificial 3D gimmick as the film was shot in standard flat format and not in 3D See more »
******SPOILERS****** Early 1960's collaboration of director Francis Ford Coppala and film producer Roger Corman of a horror story set in and around Ireland's Haloran Castle. The movie has really two stories that intersect each other halfway into the movie which sets off a series of brutal ax murders which for the time, the early 1960's, are as graphic as anything seen in films back in those days.
John Haloran, Peter Reed, dies of a sudden heart attack, which seemed self-induced, rowing a boat with his wife Louise, Luana Anders, on board one night. Getting nothing from John's estate if he dies before she does which was stated in John's will Louise frantically tries to hide John's body by throwing him overboard into the lake. Louise ties an anchor to his waist to keep John from floating to the surface and being discovered.
Back home Louise writes a letter attributing it to John stating that he's gone on an urgent business trip to New York and may not be back for some time. Louise then plans to talk John's emotionally unstable mother Lady Haloran, Eithne Dunne, into re-writing the will and include her in it with or without the survival of her husband. The next day John's older brother Richard, William Campball, is set to see his fiancée Kane, Mary Mitchel, who's arriving from the USA to meet Richard's family in Ireland. When Kane is picked up by Richard's younger brother William, Brent Patton, at the airport William tells Kane that tomorrow is the seventh anniversary of their 13 year-old sister Kathleen's, Barbara Downing, tragic death and the family is having it's annual ceremony to commemorate it.
Louise knowing how much Lady Haloran misses her beloved daughter Kathleen tries to manipulate her by trying to prove to her that she's somehow in touch with the dead Kathleen through communications with her from the "other side". This is to get her to like Louise, who Lady Haloran despises, and get her to change the will that she wrote up that left Louise out in the cold if her husband dies in terms of his inheritance. Trying to convince Lady Haloran that she's really in communication with her daughter Louise tries to stage an event by taking some toys from Kathleen's room and planting them at the bottom of the pound where she drowned seven years ago.Louise plans at the right moment to have the toys rise to the surface in Lady Haloran presence to prove, to Lady Haloran, that she's telling her the truth.
What Louise doesn't know, by reviving suppressed memories of Kathleen's death, is that she set off and put into motion the person who was responsible for it to commit a number of bloody ax murders with Louise being his first victim.
Despite a shoe string budget and a unknown cast "Dementia 13" is a pretty effective Horror/Mystery movie.The murderer is more or less reviled almost at the beginning of the film but in such a way to make you not realize it. In a good attempt of misdirection by Francis Ford Coppala the audience is made to look somewhere or at someone else in the movie which keeps you guessing who the killer is until the very end. Coppala's use of striking black and white photography as well as the effective use of sounds and shadows greatly adds to the suspense as well as creepiness of the movie.
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