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Top Mystery Movies of 1975 Online

Unravel the unknown with the best mystery movies of 1975 online. From mind-bending plots to shocking twists, these films will keep you on the edge of your seat. Watch the top mystery movies of 1975 online and immerse yourself in stories full of suspense and intrigue.

Deep Red (1975)

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An English pianist living in Rome witnesses the brutal murder of his neighbor, a psychic. With the help of a tenacious young reporter he tries to discover the killer using very unconventional methods, and the two are soon drawn into a shocking web of dementia and violence.

The Passenger (1975)

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David Locke is a world-weary American journalist who has been sent to cover a conflict in northern Africa, but he makes little progress with the story. When he discovers the body of a stranger who looks similar to him, Locke assumes the dead man's identity. However, he soon finds out that the man was an arms dealer, leading Locke into dangerous situations. Aided by a beautiful woman, Locke attempts to avoid both the police and criminals out to get him.

Three Days of the Condor (1975)

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A bookish CIA researcher finds all his co-workers dead, and must outwit those responsible until he figures out who he can really trust.

Manila in the Claws of Light (1975)

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Julio, a young fisherman from a provincial village, descends into social alienation as he arrives in Manila to search for his loved one.

Picnic at Hanging Rock (1975)

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In the early 1900s, Miranda attends a girls boarding school in Australia. One Valentine's Day, the school's typically strict headmistress treats the girls to a picnic field trip to an unusual but scenic volcanic formation called Hanging Rock. Despite rules against it, Miranda and several other girls venture off. It's not until the end of the day that the faculty realizes the girls and one of the teachers have disappeared mysteriously.

The Return of the Pink Panther (1975)

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The famous Pink Panther jewel has once again been stolen and Inspector Clouseau is called in to catch the thief. The Inspector is convinced that 'The Phantom' has returned and utilises all of his resources – himself and his Asian manservant – to reveal the identity of 'The Phantom'.

The Stepford Wives (1975)

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Joanna Eberhart has come to the quaint little town of Stepford, Connecticut with her family, but soon discovers there lies a sinister truth in the all too perfect behavior of the female residents.

Night Moves (1975)

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Private detective and former football player Harry Moseby gets hired on to what seems a standard missing person case, as a former Hollywood actress whose only major roles came thanks to being married to a studio mogul wants Moseby to find and return her daughter. Harry travels to Florida to find her, but he begins to see a connection between the runaway girl, the world of Hollywood stuntmen, and a suspicious mechanic when an unsolved murder comes to light.

Farewell, My Lovely (1975)

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Private eye Philip Marlowe is hired by ex-con Moose Malloy to find his girlfriend, a former lounge dancer. While also investigating the murder of a client and the theft of a jade necklace, Marlowe becomes entangled with seductress Helen Grayle and discovers a web of dark secrets that are better left hidden.

Farewell, My Lovely (1975)

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Private eye Philip Marlowe is hired by ex-con Moose Malloy to find his girlfriend, a former lounge dancer. While also investigating the murder of a client and the theft of a jade necklace, Marlowe becomes entangled with seductress Helen Grayle and discovers a web of dark secrets that are better left hidden.

Breakheart Pass (1975)

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At the height of the frontier era, a train races through the Rocky Mountains on a classified mission to a remote army post. But one by one the passengers are being murdered, and their only hope is the mysterious John Deakin, who's being transported to face trial for murder.

The Sunday Woman (1975)

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Police commissioner Santamaria is investigating the murder of the ambiguous architect Mr. Garrone. The investigations soon drive him into the Torino's high society. Santamaria suspect Anna Carla and at the same time falls in love for her. Lello is the lover of Massimo, Anna Carla’s gay friend. He is following another direction in order to find out the truth, and his results are confusing the Policeman. But another murder happens...

Footprints on the Moon (1975)

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Alice, a young translator, finds the real world slowly merging with her recurring nightmares as she tries to solve the puzzle of her recent memory loss. A postcard leads her to the island of Garma where the locals seems to know her. Is she who she thinks she is? And what significance does her dream of an astronaut abandoned on the moon have?

The Drowning Pool (1975)

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Harper is brought to Louisiana to investigate an attempted blackmail scheme. He soon finds out that it involves an old flame of his and her daughter. He eventually finds himself caught in a power struggle between the matriarch of the family and a greedy oil baron, who wants their property. Poor Harper! Things are not as straight-forward as they initially appeared.

Conduct Unbecoming (1975)

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A company of British soldiers in colonial India is shaken when the widow of their most honored hero is assaulted. A young officer must defend a fellow lieutenant from the charges in an unusual court-martial, while investigating the deepening mystery behind the attack.

Black Moon (1975)

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There is a war in the world between the men and the women. A young girl tries to escape this reality and comes to a hidden place where a strange unicorn lives with a family: sister, brother, many children and an old woman that never leaves her bed but stays in contact with the world through her radio.

Death at an Old Mansion (1975)

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A woman and her bridegroom are found murdered in their bed the day after their wedding. It had snowed overnight and the killer left no tracks. It is up to an amateur detective to figure out what happened. Carefully and systematically, he pieces together the clues in this locked room mystery.

The Adventure of Sherlock Holmes' Smarter Brother (1975)

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After spending decades living in the shadow of his more famous and successful sibling, Consulting Detective Sigerson Holmes (Wilder) is called upon to help solve a crucial case that leads him on a hilarious trail of false identities, stolen documents, secret codes... and exposed backsides.

Murder on Flight 502 (1975)

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On a flight to London, a note is found stating that there will be murders taking place on the airliner before it lands.

The Reincarnation of Peter Proud (1975)

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When college professor, Peter Proud begins experiencing flashbacks of an earlier life, he's mysteriously drawn to a place he's never been to, but which seems familiar and where he soon finds his previous incarnation's wife.

Autopsy (1975)

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A series of random suicides in Rome, Italy are attributed to a heatwave, but a young pathologist named Simona—who is working on a thesis about murders disguised as suicides—suspects otherwise. When a young girl associated with Simona's playboy father ends up dead in another apparent suicide, Simona teams up with the girl's priest brother to prove she was murdered and track down the unknown serial killer.

One of Our Dinosaurs Is Missing (1975)

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Escaping from China with a microfilm of the formula for the mysterious "Lotus X", Lord Southmere, a Queen's Messenger, is chased by a group of Chinese spies.

Lips of Blood (1975)

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Frédéric sees a photograph of a ruined seaside castle, which triggers a strange childhood memory. He then goes on a strange quest, aided by four female vampires, to find the castle and the beautiful woman who lives there.

Eyeball (1975)

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A group of American tourists is traveling through Spain when two of them are murdered by a mysterious serial killer who removes an eyeball from every one of his victims. The tour presses on as the murders continue, with the travelers and the police trying to deduce which one of them is the killer.

Playing with Fire (1975)

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A banker hires a seedy detective to find his daughter and keep her safe from kidnappers.

Satan's Triangle (1975)

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The female survivor of a shipwreck and two Coast Guard helicopter pilots sent to rescue her find themselves trapped in a mysterious part of the ocean known as Satan's Triangle.

Bug (1975)

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An earthquake releases a strain of mutant cockroaches with the ability to start fires, which proceed to cause destructive chaos in a small town. The studies carried out by scientist James Parmiter, however, reveal an intent with much more far-reaching consequences.

Lifespan (1975)

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Cult icon Klaus Kinski features in this dark and intriguing existential thriller. He plays the mysterious "Swiss Man" - ruthless industrialist Nicolas Ulrich - who is obsessed with a search for the elixir of life. He tricks a young American scientist into joining him on his demonic quest. A quest that ends in suicide, death and madness. The story takes place in the atmospheric European city of Amsterdam. Its winding alleys and ancient canals trap the characters in a labyrinthine maze as they find themselves manipulated like figures on a giant chess board.

Mary, Mary, Bloody Mary (1975)

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Mexican horror film about an American painter named Mary who is living in Mexico where she sells her works and also kills people for their blood. It turns out Mary is a vampire but not the traditional one with fangs. Since she has no fangs she must stab or slash the throats of her victims but soon she has a new man in her life as well as a mysterious man in black who appears to be doing the same type of murders.

Peeper (1975)

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A detective is hired to locate a girl adopted 30 years earlier whose birth father wants to bequeath her his fortune.