Best Investigation movies of 1970s

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 : 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 : 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 : 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 : 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 : 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 : 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 : Cesare Danova, Sinéad Cusack, Harvey Lembeck, Cyril Cusack,
Directors : William Kronick,

American detective goes to Ireland, for a visit to his late wife's relatives and helps the local police in a case of murder and money forgery.

Actors : Ivan Lutanský, Zdenek Hradilák, Marie Drahokoupilová, Martin Ruzek,
Directors : Stanislav Strnad,

The police investigates the circumstances of death of Tereza Kabátová (Marie Drahokoupilová) who was found in a crashed car. Her husband Frantisek Kabát (Zdenek Hradilák), director of ...

Actors : Jeong-sun Hwang, Ko-seong Dok, Jeong-im Nam,
Directors : Yong-min Lee,

Cheol-min kills off his father-in-law and makes off with the only copy of his will. The fortune passes to the dead mans wife. As Cheol-min conspires with his girlfriend to murder his spouse...

Actors : Kei Satô, Emi Yokoyama, Shin Kishida, Kaoru Janbo,
Directors : Chûsei Sone,

Mika Hino is a sharp-shooting investigator that belongs to the infamous "Gator Branch." When an executive board member of a trading company is accused of being involved in a bribery, Mika is assigned to keep watch over him.

Actors : Ling Chia, Yi Chang, Feng Hsu, Yu Wang,
Directors : Chung Hsun Tu,

The leader of a local town militia is killed just before his militia is about to be adopted into the government force. It's up to Captain Wu to investigate matters and bring all bad guys to justice. Star studded action packed golden oldie.

Actors : Asen Kisimov, Stefan Ilyev, Tzvetana Maneva, Anton Karastoyanov,
Directors : Nikola Rudarov,

Maria, a beautiful middle-aged woman, former participant in the fight against Nazism is killed. The investigator Urumov discovers the criminal. Urumov wants to know the reason why ...

Actors : Carmen Liaño, Mónica Randall, Carlos Ballesteros, Pilar Velázquez,
Directors : Bigas Luna,

A unrecognizable corpse appears on a beach in Barcelona. Then, a private investigator is hired to find out the identity of the dead man and to unveil what had happened to him.

Actors : Urmila Bhatt, Aruna Irani, Agha, Asrani,
Directors : Raghunath Jhalani,

After a long murder investigation, a police investigator finds the killer closer to home than he imagined.

Actors : Slim Pickens, Peter Haskell, Keenan Wynn, Martin Sheen,
Directors : John D. Patterson,

The Legend Of Earl Durand was the story of a young child whose family lived near DuBois, Wyoming and made Earl live in a hut in the wild because they thought he had a contagious ...

Actors : Carlo Gentili, Jerry Colman, Raffaele Curi, Simonetta Vitelli,
Directors : Demofilo Fidani,

The customers of a masseuse fall prey to a mysterious serial killer, one by one.

Actors : Iftekhar, Mahendra Sandhu, Asha Sachdev, Jagdeep,
Directors : Deepak Bahry,

Agent Vinod is assigned the task of locating an abducted scientist.

Actors : Poul Bundgaard, Helle Virkner, Ove Sprogøe, Helle Hertz,
Directors : Erik Balling,

A comedy about a Danish private detective, normally just occupied with cases about unfaithful spouses, is suddenly involved in murder, arms deal, revolution in Guateragua, briefcase full of money and the Danish intelligence agency.

Actors : Tony Gacon, Vincent Meehan, Colette Laffont, Rose English,
Directors : Sally Potter,

What happens after the curtain falls on the death of Mimi, tragic heroine of Puccini's La boh?me? In Thriller, Mimi teams up with the opera's comic heroine Musetta to investigate her own death.