A woman's husband dies of a heart attack shortly before they are to visit his family. She dumps his body into a lake and tells the family that he was called away on business, while she schemes to ensure she collects his inheritance. Her scheming is cut short, however, by the appearance of an ax-wielding killer out for blood.

Of note today as being Francis Ford Coppola's feature film debut, or at least his first credited one. Because it's from a director as accomplished as Coppola, there seems to be more thought put into analyzing Dementia 13 than is necessary. It is exactly what it appears to be: an early slasher film made on a shoestring budget and produced by the master of the cheapie, Roger Corman. It's not a bad movie. It's a little slow at times and the script doesn't always make sense, but it's a perfectly serviceable movie of its type. It has some style that one could point to as a sign of Coppola's yet-to-emerge talent. It also provided the line about "an American girl raised on promises" that was cribbed by Tom Petty for his song "American Girl," which I thought was a neat bit of trivia.

******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.

In Ireland, the greedy American Louise (Luana Anders) is disappointed with the will of her mother-in-law Lady Haloran (Ethne Dunne) on the eve of Kathleen's seventh memorial ceremony. While rowing a small boat during the night in the pond of the Haloran Castle with Louise, John Haloran (Peter Read) has a fatal heart attack. Louise is aware that she will not receive the share of the inheritance if the death of John is discovered, so she dumps his body in the pond. Then she forges a farewell letter from John to his mother telling that he needs to go back to New York, and she separates some clothes in John's suitcase to simulate his travel. Louise succeeds to convince Lady Haloran and her sons Richard (William Campbell) and Billy (Bart Patton) about John's urgent business trip. Later she talks to Billy about the spooky old castle and Billy tells that the place is haunted by his sister Kathleen, who drowned in the pond many years ago driving his mother to the edge. On the next morning, Richard's American fiancée Kane (Mary Mitchel) arrives for the family's reunion and the Machiavellian Louise approaches to Lady Haloran showing sympathy for her feelings for Kathleen. During the night, Louise goes to Kathleen's bedroom and gets some toys; then she dives in the pond to prepare a prank to lure Lady Haloran. When she returns, she is attacked by a man with a machete and dies; when she is not found in the castle, the family believes she has traveled without saying goodbye. Later, Lady Haloran's doctor Justin Caleb (Patrick Magee) decides to investigate the small lake and the mystery about the Haloran Castle, disclosing a hidden secret in the dysfunctional family.

It is curious to see "Dementia 13" in 2009, and the greatest attraction is the name of the director and writer Francis Coppola (without the Ford) in one of his earliest works. Produced by Roger Corman, the King of the B-Movies (especially in the 60's), this black-and-white feature has an abrupt beginning without any previous development of characters or situation. Then the flawed and predictable story of dementia and family curse visibly follows the style of Alfred Hitchcock. I found in IMDb that the original title would be "Dementia"; however, it was added a "13" since there is a 1955 movie with the same title. My vote is five.

Title (Brazil): "Demência 13" ("Dementia 13")