Best Investigation movies of 1970

Actors : Orazio Orlando, Gianni Santuccio, Florinda Bolkan, Gian Maria Volontè,
Directors : Elio Petri,

A chief of detectives, homicide section, kills his mistress and deliberately leaves clues to prove his own responsibility for the crime.

Actors : Tony Musante, Enrico Maria Salerno, Suzy Kendall, Eva Renzi,
Directors : Dario Argento,

A witness of an attack, a writer becomes stalked by a serial killer.

Actors : Bud Cort, Shelley Duvall, Sally Kellerman, Michael Murphy,
Directors : Robert Altman,

An introverted loner living in the bowels of the Astrodome plots to develop - with the aid of a mysterious guardian angel - a pair of wings that will help him fly.

Actors : Jean Yanne, Pascal Ferone, Stéphane Audran, Antonio Passalia,
Directors : Claude Chabrol,

An unlikely friendship between a dour, working class butcher and a repressed schoolteacher coincides with a grisly series of Ripper-type murders in a provincial French town.

Actors : Vincent Price, Judy Huxtable, Peter Cushing, Christopher Lee,
Directors : Gordon Hessler,

A serial killer who drains his victims' blood is on the loose in London; the police follow him to a house owned by an eccentric scientist.

Actors : Barbara McNair, Anthony Zerbe, Sidney Poitier, Martin Landau,
Directors : Gordon Douglas,

In San Francisco, a high-priced call girl is murdered and the case is assigned to Police Lieutenant Virgil Tibbs.

Actors : Ray Sager, Wayne Ratay, Phil Laurenson, Judy Cler,
Directors : Herschell Gordon Lewis,

A TV talk-show hostess and her boyfriend investigate a shady magician whom has the ability to hypnotize and control the thoughts of people in order to stage gory on-stage illusions using his powers of mind bending.

Actors : Raymond St. Jacques, Calvin Lockhart, Judy Pace, Godfrey Cambridge,
Directors : Ossie Davis,

Gravedigger Jones and Coffin Ed Johnson are two black cops with a reputation for breaking the odd head. Both are annoyed at the success of the Reverend Deke O'Mailey who is selling trips ...

Actors : Ângelo Assunção, Ronaldo Beibe, Andreia Bryan, José Mojica Marins,
Directors : José Mojica Marins,

Psychiatrist experiments LSD on 4 volunteers, to investigate Coffin Joe's influence over them. Each patient presents a different reaction, involving sex, perversion and sadism.

Actors : Johnny Sekka, Peter Cushing, Alexander Davion, Patrick Macnee,
Directors : Robert Hartford-Davis,

A group of friends search for a young English Oxford student who has disappeared whilst researching in Greece. They are shocked to find that, wherever he has been, certain unsolved murders ...

Actors : Berwick Kaler, Annabella Wood, Jane Hilary, John Miranda,
Directors : Andy Milligan,

A murderous barber and his equally psychopathic friend, a baker, hatch a plan whereby the barber murders people and the baker makes them into pies to be sold in his shop.

Actors : Judith Resnick, Martin Barolsky, Earle Edgerton, Kaly Mills,
Directors : Leonard Kirtman,

A psychopathic killer uses the carousel ride at a carnival to pick his victims, whom he then murders and dismembers.

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 : Olive Denneccio, João Fernandes, Linda Southern, Larry Hunter,
Directors : Doris Wishman,

A seemingly pleasant fellow, Arthur goes berserk and rapes any woman in front of him wearing gold earrings. One woman tells the investigating detective (who is Arthur's uncle) she was raped...

Actors : Bernard Farber, George Ardisson, José Torres, Tony Kendall,
Directors : Pasquale Squitieri,

Framed for a bank robbery, bounty killer Django's brother, Steve is lynched. Django hunts down Sartana, Steve's supposed accomplice, but finds him innocent also. The two men seek out the ...

Actors : Julien Guiomar, Jacques Perrin, Eva Simonet, Paul Barge,
Directors : Paul Vecchiali,

Unhappy women are being murdered by Emile (Jacques Perrin), a psychotic young man suffering from the delusion that his acts are mercy killings. The detective (Julien Guiomar) assigned to ...

Actors : Joan Collins, Judy Geeson, George Peppard, Oskar Homolka,
Directors : Sam Wanamaker,

A British intelligence agent must track down a fellow spy suspected of being a double agent.

Actors : Gayle Hunnicutt, Flora Robson, David Hemmings, Wilfrid Hyde-White,
Directors : Richard C. Sarafian,

Reformed drug addict Tim Brett is holidaying in Italy with his aunt. When she is murdered, he tries to investigate, and soon his whole life is out of control.

Actors : Kayo Matsuo, Atsuo Nakamura, Akira Nakao, Yukiko Kobayashi,
Directors : Michio Yamamoto,

Keiko and her friend are trying to find her missing brother after he disappeared visiting his girlfriend Yuko.

Actors : John Wood, Dudley Sutton, Sammy Davis Jr., Peter Lawford,
Directors : Jerry Lewis,

Two night club owners find themselves in trouble with the law. One of them goes to his English Lord brother for help, and the Lord is later murdered. He swaps places with his dead brother to solve the murder.