Best movies like The Girl Who Knew Too Much

The San Francisco area is beset by a series of seemingly random murders without motive or pattern. The police are taunted by phone calls and letters. Could the maniac be the violent, truck driver, or the seemingly mild-mannered mailman, or even a cop?

A rich, mentally-unstable man - with a penchant for playing deadly S&M games with women who resemble his dead wife - sparks off a chain of bizarre events after getting remarried.

After being run out of Las Vegas, reporter Carl Kolchak heads for Seattle and another reporting job with the local paper. It's not long before he is on the trail of another string of bizarre murders. It seems that every 21 years, for the past century, a killer kills a certain number of people, drains them of their blood and then disappears into the night. Kolchak is on his trail, but can he stop him?

Tourists take a boat to a remote island, where they find that most of the people have disappeared, and something is stalking them. They find a hidden room in the big mansion on a hill, and an ancient diary, which gives them clues to the source of the terror.

An elderly heiress is killed by her husband who wants control of her fortunes. What ensues is an all-out murder spree as relatives and friends attempt to reduce the inheritance playing field, complicated by some teenagers who decide to camp out in a dilapidated building on the estate.

An American writer living in Rome witnesses an attempted murder that is connected to an ongoing killing spree in the city, and conducts his own investigation despite himself and his girlfriend being targeted by the killer.

Three short tales of supernatural horror. In “The Telephone,” a woman is plagued by threatening phone calls. In "The Wurdalak,” a family is preyed upon by vampiric monsters. In “The Drop of Water,” a deceased medium wreaks havoc on the living.

Bruno, an up and coming film composer, has been hired to write the score to a new horror movie. The film’s director, Sandra, suggests that he move into a spooky and secluded villa, so as to get extra creative inspiration. However, life begins to imitate art as a vicious killer starts bumping off anyone and everyone who happens to pay Bruno a visit. As each death leaves more clues, while opening up more possibilities as to potential suspects, Bruno begins to believe that the film he’s been hired to work on may itself be the key to unlocking the mystery...

When a young female student is savagely killed in a park during a thunderstorm, the culprit seems obvious: TV sports personality Alessandro Marchi, seen fleeing the scene of the crime by numerous eyewitnesses. The evidence against him is damning... but is it all too convenient? And when the killer strikes again while Marchi is in custody, it quickly becomes apparent that there's more to the case than meets the eye...

A high-rise apartment populated by models, nightclub dancers and call girls becomes the focus of a mysterious serial killer. When a young model named Jennifer and her friend Marilyn move into one of the victims' former apartments, Jennifer becomes the next target and the pair try to identify the killer.

After her husband dies in a freak plane accident, a woman leaves London for Athens to collect his generous life insurance policy. She soon discovers that others besides herself are keen to get their hands on the money - and are willing to kill for it. Meanwhile, a private investigator arrives to investigate irregularities in the claim, teaming up with a beautiful reporter.

A reporter and a blind, retired journalist try to solve a series of murders. The crimes are connected to experiments by a pharmaceutical company in secret research. The two end up becoming targets of the killer.

During their Christmas break, a group of sorority girls are stalked by a stranger who leaves them threatening phone calls.

A mad killer is loose in Venice's catacombs. He attacks the beautiful women, releasing them into the underworld, kill them and then stop them and add them to his "collection".

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.

An American journalist in Prague searches for his girlfriend who has suddenly disappeared.

A madman haunted by the ghost of his ex-wife carves a corpse-laden trail.

After making what should have been a routine visit to a local county hospital on Valentine's Day, divorcee Susan Jeremy finds herself detained for further observation. Meanwhile, a homicidal maniac disguised as a surgeon wanders around the hospital, killing all the staff members associated with her.

After a doctor kills his mistress and himself while researching the mysterious previous owner of his Boston home, his colleague, Dr. Norman Boyle, takes over his research and moves his family from New York City to the Boston mansion. Soon after, Boyle's young son Bob becomes plagued by visions of a young girl, who warns him of the danger within the house.

A young policewoman slowly goes insane while tracking down an elusive serial rapist/killer through Italy when she herself becomes a victim of the brutal man's obsession.

Curd Jurgens as the betrayed husband is incredibly expressive and believable; Rosabla Neri, as the philandering Alexa, delivers her usual thoughtful performance and, in doing so, makes her potentially cardboard cut-out character multi-dimensional, and Juan Luis Galiardo, as Alexa'a heartthrob Pierre, also cares enough about his craft that he avoids the trappings of a potentially stereotypical character and, like Neri, makes him real and full of depth

Thriller about a reporter who comes home from an overseas assignment to find his baby in the hospital and his wife dead...

Mark Schall kills his mother-in-law and wounds his father-in-law in the middle of the night, then turns himself in. He claims, however, that he cannot remember the crime itself. His defense team finds evidence that suggests the crimes were committed while Mark was sleep walking. They build their defense around this theory.

A young opera singer is stalked by a deranged fan bent on killing the people associated with her to claim her for himself.

A surgeon discovers that he can restore the beauty to his girlfriend's scarred face by murdering other women and extracting fluids from their pituitary gland. However, the effects only last for a short time, so he has to kill more and more women. It is ultimately a killing spree which ends with considerable death and disaster.

After the death of their grandfather, two sisters inherit their family castle, which is said to be haunted by the Red Queen, whom legend says claims seven lives every hundred years. When a mysterious woman in a red cloak starts targeting their circle of friends, the sisters begin to suspect there might be some truth to the legend.

As a thirteen year old, Martha Caldwell witnessed the death of her parents in a terrible railway accident. Barely surviving the tragedy herself, Martha was struck dumb due to the shock. Now an adult, the still mute Martha lives with her uncle Ralph in the Spanish countryside. Martha's cousing Jenny arrives to be with the family but is quickly stabbed to death. It appears that a sex maniac is roaming the countryside; killing pretty young girls. The already traumatized Martha seems likely to be the next victim but the case turns out to be far more complicated than it would first seem.

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.

The Theatre of Death in Paris specialises in horror presentations. A police surgeon finds himself becoming involved in the place through his attraction to one of the performers. When bloodless bodies start showing up all over town he realises there could be links with the theatre.

In this crime-thriller, Rome proves to be an unhappy destination for an American couple when the husband is kidnapped and his wife begins a desperate search for him.

Scotland Yard is thrown into an uproar when a mad killer begins knocking off beautiful young blondes.

Valentina, a beautiful fashion model, takes an experimental drug as part of a scientific experiment. While influenced by the drug, Valentina has a vision of a young woman being brutally murdered with a viciously spiked glove. It turns out that a woman was killed in exactly the same way not long ago and soon Valentina finds herself stalked by the same killer.

Patients and those working in an isolated mental hospitals are murdered, one by one, by a madman lurking in the corridors

A group of young adults go to a remote villa to do drugs and party, little realizing a woman-hating serial killer who's just escaped from an asylum is hiding out there.

Fabrizio, a fashion photographer, Maregalit, a nympho model; Anna, Fabrizio's wife and Valeria, her sister, land on deserted islet for a photo-shoot. When Fabrizio temporarily leaves the women alone to buy some fuel for their yacht, a young man, Marco, joins the trio. The women are diffident: Marco could be a fugitive from a penitentiary and the body of a policeman is hidden somewhere. He seduces all three and eventually kills Maregalit and Anna; he and Valeria are then joined by Fabrizio. The three had planned to murder Anna for her money but there's another surprise for Fabrizio, because he is in turn killed by his accomplices (who are long-time lovers). All over? Not at all, because there's a nice sting at the end...