The Old Dark House (1963 film)

The Old Dark House 1963 is a comedyhorror film directed by William Castle. It is a remake of the 1932 film of the same name directed by James Whale. The film was based on the novel by J. B. Priestley originally published under the name Benighted, and the new screenplay was written by Robert Dillon.

Each of the relatives is required to return to the dilapidated mansion before midnight each evening or forfeit his share of the family fortune. During the night, one of the Femm family dies every hour. First Agatha Femm, Caspers mother, is discovered with her knitting needles stuck in her throat. Caspers twin brother, Jasper, is the next victim, followed by Roderick, the head of the family.Tom stumbles upon the fact that the killer is a woman, and he suspects Morgana, but discovers that Cecily is guilty just before she confesses, explaining that she wanted the entire family estate. Cecily runs from the house, and Tom discovers that she has placed time bombs in all of the clocks in the house. Racing against time, he frantically defuses each of the bombs. With moments to spare, he hurls the last bomb out of the window, and it explodes at Cecilys feet. ........

Source: Wikipedia