Best Investigation movies of 1970s

Actors : Michel Galabru, Philippe Noiret, Michel Serrault, Charles Denner,
Directors : Pierre Tchernia,

When he investigates his daughter's disappearance, a bookseller discovers an underground society, living literally under the streets of Paris.

Actors : Frank Wolff, Raf Vallone, Gillian Bray, Gabriele Tinti,
Directors : Duccio Tessari,

A chief police inspector investigates the disappearance of a 25-year-old, intellectually disabled woman, the daughter of a lonely widower. After she turns up dead, the cops race to find the...

Actors : John Wood, Tammy Grimes, Farrah Fawcett, Jeff Bridges,
Directors : Lamont Johnson,

A woman's husband is murdered and she and her lover must find the killer or stand accused of doing it themselves.

Actors : Stan Wojno, Gordon De Vol, Jacqueline Ray, Jackson Bostwick,

A team of men and women investigate the mysterious deaths of two previous expeditions to a strategically important but barren world.

Actors : Raymond Burr, Momoko Kôchi, Akihiko Hirata, Takashi Shimura,

In 1977, the film was purchased and colorized by Luigi Cozzi in a terrible way of a old negative print. When American reporter Steve Martin investigates a series of mysterious disasters off...

Actors : Yvonne Nielson, Robert Winston, Katherine Henryk, Vic Diaz,
Directors : Newt Arnold,

A sex-crimes specialist from New York travels to the Philippines to help his friend, a Manila homicide detective, solve a series of murders.

Actors : Rudolf Hrusínský, Libuse Holeckova, Hana Brejchová, Jana Vanková,
Directors : Petr Schulhoff,

Major Kalas (Rudolf Hrusínský) from the Prague criminal intelligence service has been sent to a small town of Dubá in North Bohemia to help with the investigation of the puzzling death of a...

Actors : John Mills, Margaret Tyzack, Simon MacCorkindale, Barbara Kellerman,
Directors : Piers Haggard,

A separate screenplay by Nigel Kneale for theaters, parallel to the 1979 Quatermass four part mini-series. The story set in the near future involves influences from outer space that are possessing people. Professor Quatermass must save his granddaughter from the clutches of a popular and sinister cult "Planet People" that "performs raptures".

Actors : Michael Ontkean, Ralph Waite, Kathleen Cody, Dianne Hull,
Directors : Thomas J. Schmidt,

Two girls on their way to a hippie encounter session pick up a crazed Vietnam veteran, who might just be the serial killer who is murdering hippies in the area.

Actors : Dave Galluzzo, Chip Greenman, Rich Pemberton, Rick Styles,
Directors : Don Edmonds,

A rock band called "The Clowns" comes under suspicion of murder when several prostitutes are killed by individuals made up like members of the band.

Actors : Philippe Lemaire, Robert Woods, Emma Cohen, Françoise Brion,
Directors : Jesús Franco,

A nightclub singer is haunted by the ghost of her late father. The dead man summons her through a mirror, forcing her to commit a series of violent crimes.

Actors : Holly Woodlawn, Buck Henry, Marshall Efron, Alan Abel,

Driving through New York City in his Sexmobile, Dr. Harrison Rogers of the Bureau of Sexological Investigation, searches out luminary figures in the world of sex.

Actors : Perla Cristal, Jean Seberg, Marisol, Barry Stokes,
Directors : Juan Antonio Bardem,

A serial killer uses a scythe to slash his murder victims--or maybe it's *her* murder victims?

Actors : Broderick Crawford, George Kennedy, Mariko Okada, Yûsaku Matsuda,
Directors : Jun'ya Satô,

When an American is murdered in a Japanese inn, Tokyo police detective Munesue follows the trail of the killer to New York. There he is joined by a New York City detective named Shuftan and together they sort out the crime.

Actors : Stefano Patrizi, Benjamin Lev, Tomas Milian, Eleonora Giorgi,
Directors : Romolo Guerrieri,

In this riveting Italian exploitation thriller, three young men embark upon a terrifying series of bloody crimes, engaging in robbery, gunplay, and murder. As the entire police force ...

Actors : Luanne Roberts, Buddy Pantsari, Julie Conners, John Alderman,
Directors : Jonathan Lucas,

A private detective journeys to Africa to find a legenday white gorilla. The gorilla turns out to be an escaped Nazi war criminal.

Actors : Yuriy Demich, Aleksandr Zbruev, Irina Ponarovskaya, Bruno Frejndlikh,
Directors : Gerbert Rappaport,

Menya eto ne kasaetsya (aka... It's not my business) is set in Soviet Russia. The manager of a garment industry dies in a car accident. Investigation reveals that the accident was not a ...

Actors : Asha Parekh, Aruna Irani, Mehmood Jr., Jeetendra,
Directors : Nasir Hussain,

Sunita is a young woman who ends up married to the wrong man, Rajan. Thinking that he has conspired with his girlfriend, Monica to murder her, she runs away to find an old friend of her ...

Actors : John Smihula, Fred Borges, Paul Smihula, Michael Siegal,
Directors : Nathan Schiff,

A series of horrible murders prompts a massive police investigation. Inspector James Cameron, a two-fisted roughneck with his own philosophy on handling crime, heads the investigation. A ...

Actors : Delia Boccardo, Luc Merenda, Mel Ferrer, Michele Gammino,
Directors : Sergio Martino,

Starting the investigation of a murder mystery, a police man is to investigate dangerously top politicians and military. A chain of suicides takes its toll among the current and past ...