"A witch maintains herself young by killing all the members of a noble family. But the intervention of the famous journalist Jean Duprey will put an end to her crimes..." ... https://www.youtube.com/watch?v=6FN5CpkeKck
"The lovely Maria Teresa is unhappily married with the impotent lawyer Marcello. Maria Teresa's marriage is contrasted by the passionate Valeria, who is killed during a chase. Is Valeria's husband the murderer? Maria Teresa helps him..."
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https://www.youtube.com/watch?v=quRDYKKJS80
"While writing her thesis in criminology, a young woman begins to suspect that her new boyfriend is a serial killer."
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https://www.youtube.com/watch?v=cuCwyC7Aml0
"A journalist finds himself on the trail of a murderer who's been targeting people around him, while the police are considering him a suspect in their investigation."
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https://www.youtube.com/watch?v=pn9eq99oGP4
"An instructor marries a traumatized, crippled woman. The wife suffers from PTSD and is tormented by a traumatic event that happened in her past. What is even more unfortunate is that her marriage is a just part of her maniac husband's evil scheme to kill her for her money. It isn't long before the formula is put into action and the gory body count starts to mount."
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https://www.youtube.com/watch?v=jbf4bznFR0s
"A group of people accidentally kill a man and leave his body in a public park. Six years later, they are enjoying a respectable social life, until they receive a mysterious letter with a compromising photograph, resurfacing the events that have occurred."
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https://www.youtube.com/watch?v=05Y53SNfGOo
"An invalid billionaire sends out letters to his estranged daughters. He summons them to his mansion in order to test them, determined to find his worthy heir. The girls travel to their father and soon after they arrive, a series of successive deaths occur, complicating their hopes of an easy inheritance."
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https://www.youtube.com/watch?v=nULaEYMTMyk
"Police try to track down a hooded serial killer who murders his victims with a combination of acid and poison gas."
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https://www.youtube.com/watch?v=Kgml8T7YxLE