Best Investigation movies of 1970s

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 : Fabio Testi, Uschi Glas, Jean Gabin, Jacques Richard,
Directors : Denys de La Patellière,

Whilst being transferred to a psychiatric hospital, a ruthless serial killer Gassot makes a break and goes on the run. He arrives in Marseilles, intending to escape abroad. Here, he falls for a young prostitute, Gerda.

Actors : Renato Pozzetto, Max von Sydow, Shelley Winters, Alberto Lionello,
Directors : Mauro Bolognini,

Black Journal (originally titled Gran Bollito) is a 1977 Italian drama film directed by Mauro Bolognini. It is based on the real life events of Leonarda Cianciulli, the Italian serial killer best known as the "Soap-Maker of Correggio".

Actors : Nancy Kwan, Ross Hagen, Roberta Collins, Maria De Aragon,
Directors : Robert Vincent O'Neill,

An insurance investigator battles Dr. Tsu and her sexy all-girl army.

Actors : Alice Arno, Norma Kastel, Jack Taylor, Lina Romay,
Directors : Jesús Franco,

A Whodunit from the great! The investigation into the suicide of a young woman found dead at the bottom of a cliff uncovers many lovers of both sexes, including her Brother's sister and 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 : Rosie Stone, Frank Bannon, Joshua Bryant, Linda York,

Two Los Angeles detectives are assigned to track down and arrest a brutal rapist-murderer terrorizing the city. Their job is complicated by the fact that the killer is able to avoid capture because he can pose as a woman.

Actors : Elsa Lanchester, Maurice Evans, Ray Milland, John Carradine,
Directors : Georg Fenady,

The murder of a Wax Museum proprietor and some other strange goings-on in the vicinity prompt a police investigator to determine whether the killer is one of the principles who wants to own...

Actors : Damiano Damiani, Riccardo Cucciolla, Franco Nero, Mario Adorf,
Directors : Florestano Vancini,

How the Italian Fascist Party managed to turn the physical elimination of a political enemy into a test of strength fundamental for the ascent into the totalitarian regime.

Actors : Yoshirô Aoki, Kai Atô, Yûsaku Matsuda, Asami Kobayashi,
Directors : Tôru Murakawa,

A journalist steals a gun from a cop after killing him and goes on a spree of robbery and murder.

Actors : Barry Newman, Diana Muldaur, Robert Colbert, Harold Gould,
Directors : Sidney J. Furie,

Tony Petrocelli, a bright young lawyer practicing in the rich cattle town of Baker, becomes embroiled in a murder case.

Actors : Johnnie Hill, Emerson Boozer, Owen Watson, René Van Clief,
Directors : Michael Fink,

The female head of a detective agency is hired by a crime lord to figure out who's taking his action.

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 : Akiko Nishina, Keiko Kishi, Kôji Kita, Kôji Ishizaka,
Directors : Kon Ichikawa,

Kôsuke Kindaichi, a somewhat peculiar private detective, visits a remote town. He meets a police detective and they start to investigate an old unsolved murder. Then some murders happen. ...

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 : 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 : 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 : 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 : 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 : Mary Millington, Alan Lake, Glynn Edwards, Gavin Campbell,
Directors : Willy Roe,

Two detectives are drawn into the world of porn, while investigating murders of centrefolds...