Dementia 13 (1963) - Plot Summary Poster



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  • 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.

  • The seventh anniversary of the death of then pre-teen Kathleen Haloran is approaching, she who died from drowning in the pond on the family estate, Haloran Castle, in Ireland. Since, her mother, the family matriarch Lady Haloran, who still lives in Haloran Castle, has had a maniacal obsession with Kathleen's memory. She holds a memorial ceremony every year on the estate on that anniversary, the ceremony only reserved for those blood members of their immediate family, namely her and her three now adult sons, John Haloran, Richard Haloran and Billy Haloran. She works herself up into a frenzy more so around this time of the year because of the ceremony. And she has deeded her entire estate to a charity in Kathleen's name. None of these facts sit well with John's greedy wife, Louise Haloran, who believes her mother-in-law is crazy. Another soon to be addition to the family is Richard's fiancée, Kane. On the eve of the ceremony, John dies from a heart attack in front of Louise, who hides his death from the family as she tries to work her and John back into the will through an elaborate scheme involving Lady Haloran's obsession with Kathleen, and Louise acting the caring, concerned daughter-in-law. Coinciding with this anniversary is the disappearance of several people from the estate. What those remaining on the estate are unaware of is that the missing people have been hacked to death by an ax murderer. Lady Haloran's physician, Dr. Justin Caleb, takes it upon himself to find out the cause of all the strange goings-on on the estate if only for Lady Haloran's sake. If he or anybody finds out the truth, they will learn that these ax murders are connected to Kathleen's death seven years earlier.

  • Widowed by the unexpected and sudden death of her spouse, Louise Haloran knowing that she will be excluded from the inheritance as everything is designated to go to charity, quickly begins to hatch a daring plan to get her hands on her share. As a result, the scheming woman after disposing of the body, pays a visit to her late husband's family estate in Ireland, the Castle Haloran, pretending that he is still alive, away for business. However, unbeknownst to her, she is targeted by an axe-wielding murderer who lurks within the family estate, thirsting for blood. What mystery shrouds Lady Haloran's noble house?

  • John Haloran has a fatal heart attack, but his wife Louise won't get any of the inheritance when Lady Haloran dies if John is dead. Louise forges a letter from John to convince the rest of his family he's been called to New York on important business, and goes to his Irish ancestral home, Castle Haloran, to meet the family and look for a way to ensure a cut of the loot. Seven years earlier John's sister Kathleen was drowned in the pond, and the Halorans enact a morbid ritual in remembrance. Secrets shroud the sister's demise, and soon the family and guests begin experiencing an attrition problem.

  • A scheming widow hatches a daring plan to get her hands on her late husband's inheritance, unbeknownst to her that she is targeted by an axe-wielding murderer who lurks within the family's estate.


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