Best Investigation movies of 1970s

Actors : Shirley Washington, Trina Parks, Edna Richardson, Bettye Sweet,
Directors : William Witney,

Syreena must investigate the disappearance of her mother, Cinderella. A series of wild complications follow.

Actors : Kurt Raab, Jeff Roden, Margit Carstensen, Ingrid Caven,
Directors : Ulli Lommel,

Story of a gay serial killer who murders young boys so he can serve them as dinner to his circle of fellow cannibals.

Actors : Carmen Young, Rita Calderoni, Mickey Hargitay, Raul Lovecchio,
Directors : Renato Polselli,

A respected doctor becomes the prime suspect in a series of gruesome murders.

Actors : Shane Briant, Katya Wyeth, James Bolam, Rita Tushingham,
Directors : Peter Collinson,

A timid, withdrawn woman meets a man she believes is finally the love of her life, unaware that he is a vicious serial killer.

Actors : Aude Landry, Lisa Langlois, Laurent Malet, Donald Sutherland,
Directors : Claude Chabrol,

Homicide detective Steve Carella is trying to solve the brutal murder of 17-year-old Muriel Stark. Her younger cousin Patricia, who saw the killer and barely escaped with her life, helps him. However, the case soon takes a bizarre turn.

Actors : Jacqueline Bisset, Martin Ritt, Robert Shaw, Jon Voight,
Directors : Maximilian Schell,

While investigating a high-profile murder case, a savvy but unorthodox veteran police inspector has to cope with a bad conscience, bad health, an overzealous partner, a timid superior and ...

Actors : Jean Anderson, Patricia Neal, Nicholas Clay, Pamela Brown,
Directors : Alastair Reid,

Effective psychological love story with a macabre twist not found in the original Joy Cowley novel. The dreary existence of middle- aged spinster Maura Prince takes an unexpected turn with ...

Actors : Dennis Waterman, John Thaw, Ian Bannen, Barry Foster,
Directors : David Wickes,

Cinematic spin-off from the popular TV series. Hard-bitten Flying Squad officer Jack Regan gets embroiled in a deadly political plot when an old friend asks him to investigate the death of ...

Actors : Donald Pilon, Jean-Louis Roux, Christopher Plummer, Karen Black,
Directors : Harvey Hart,

A detective investigating the death of a heroin-addicted prostitute uncovers evidence pointing to the existence of a murderous devil cult.

Actors : Jacques Herlin, Fabio Garriba, Carla Tatò, Gian Maria Volontè,
Directors : Marco Bellocchio,

A populist right-wing tabloid newspaper tries to derail the official police investigation of a brutal murder of a young girl in order to help the fascist and right-wing candidates it supports in the upcoming elections.

Actors : Dennis Waterman, John Thaw, Denholm Elliott, Ken Hutchison,
Directors : Tom Clegg,

Second cinematic spin-off from the popular 70's police series. Regan & Carter head a Flying Squad investigation into a series of bank raids by a team of well-armed villains who are flying in from the continent.

Actors : Percy Herbert, Lee Van Cleef, Carroll Baker, Stuart Whitman,
Directors : Alexander Singer,

A Native American born US Army officer, Captain Apache, investigating a murder, uncovers a presidential assassination plot.

Actors : Ewa Aulin, Klaus Kinski, Angela Bo, Sergio Doria,
Directors : Joe D'Amato,

A man discovers an ancient Incan formula for raising the dead, and uses it for a series of revenge murders.

Actors : Frederic Forrest, Al Lettieri, Robert Forster, Anthony Quinn,
Directors : Richard Fleischer,

After his mistress is savagely beaten up a Mafia leader goes after the killer with a bloody vengeance. Soon after the hunt begins, a gang war ensues.

Actors : Yôko Shimada, Kensaku Morita, Gô Katô, Tetsurô Tanba,
Directors : Yoshitarô Nomura,

Detectives investigate the murder of an old man found in a Tokyo rail yard.

Actors : Catherine Alric, Philippe Noiret, Hubert Deschamps, Annie Girardot,
Directors : Philippe de Broca,

Romance in the prime of life. When Lise's car bumps Antoine's bike, they recognize each other from a brief fling 20 years before while at the Sorbonne. He's now a professor of Greek; she's ...

Actors : Michelle Yim, Norman Chu, Eddy Ko, Melvin Wong,
Directors : Hark Tsui,

A secret agent investigates a village that is populated by crazed, inbred cannibals.

Actors : Liv Ullmann, Max von Sydow, Trevor Howard, Per Oscarsson,
Directors : Laslo Benedek,

A man named Salem escapes from an insane asylum where he was confined for an axe-murder. Falsely convicted under a plea of "guilty due to insanity", he does not plan to let his sister and ...

Actors : Ian Mune, Sam Neill, Nevan Rowe, Warren Oates,
Directors : Roger Donaldson,

Recluse Smith (Sam Neill) is drawn into a revolutionary struggle between leftist guerillas and the New Zealand government. Implicated in a murder and framed as a revolutionary conspirator, ...

Actors : Jennifer Stock, Tawm Ellis, Alan Brock, Michael Harris,
Directors : Michael Findlay,

A group of college students are led by their professor into the mountains in search of the Yeti. The students start to be killed off one by one.