Best Investigation movies of 1970s

Actors : Leonora Fani, Jeff Blynn, Gianni Dei, Michele Renzullo,
Directors : Mario Landi,

In Venice a detective is on the trail of a killer who commits a double murder (a married couple) then more grisly killings occur. Sex, drugs, gore and perversions are ingredients of this sadistic and sleazy giallo.

Actors : Morgan Woodward, Burt Lancaster, Cameron Mitchell, Susan Clark,

An ex-con, once a cop, now working as security in a college, decides to investigate the murder of one of the students, a daughter of a senator.

Actors : Jean-Louis Trintignant, Sacha Distel, Dominique Sanda, Carla Gravina,
Directors : Philippe Labro,

A strange series of murders are being committed in Nice on the French riviera. The commissionaire Carella is in charge and tries desperately to find a missing link between all of these ...

Actors : Verna Bloom, Henry Darrow, Eddie Egan, Robert Duvall,
Directors : Howard W. Koch,

After his suspension for the shooting death of drug runner, a New York City cop vows to keep the streets clean, any way he can.

Actors : Françoise Fabian, Giancarlo Badessi, Franco Nero, Pierluigi Aprà,
Directors : Damiano Damiani,

The latest success by film-maker Giacomo Solaris is a crime thriller about a judge who gets too friendly with the Mafia and is murdered. A resentful Sicilian magistrate orders the film ...

Actors : Reatha Grey, Stan Kamber, Marlo Monte, Tiffany Peters,
Directors : Jamaa Fanaka,

A proud black man does time in jail where he is subjected to heinous experiments. Once released, he goes about extracting vengeance on those who put him in prison. This includes both ...

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 : Natsuko Yashiro, Tamaki Katsura, Yôko Azusa, Yuri Yamashina,
Directors : Yasuharu Hasebe,

Two restaurant employees begin a torturous and sexual killing spree after they accidentally kill a hitch hiker and find that murder and mutilation is their mutual aphrodisiac.

Actors : Silvano Tranquilli, Sylva Koscina, Annabella Incontrera, Farley Granger,
Directors : Roberto Bianchi Montero,

A serial killer is on the loose. His victims are unfaithful wives and he always leaves compromising photographs at the crime scene.

Actors : David Moses, Diana Davidson, Toni Jannotta, John Stinson,
Directors : William Malone,

An ex-cop, now working as a hack novelist, is called out of retirement to help investigate a string of deaths that appear to be the work of a serial killer but soon are revealed to be the ...

Actors : Jean-Pierre Aumont, Michèle Morgan, Philippe Léotard, Serge Reggiani,
Directors : Claude Lelouch,

A very unorthodox police inspector is assigned to investigate a millionaire's mysterious death.

Actors : Tom Pittman, Bob Jones, Ray Lynch, Hal Reed,
Directors : Tom Hanson,

The San Francisco area is beset by a series of seemingly random murders without motive or pattern. The police are taunted by phone calls and letters. Could the maniac be the violent, truck ...

Actors : Tiiu Leek, Christopher Lee, Daniel Pilon, Robert Vaughn,
Directors : Ed Hunt,

An advance team from a dying, far-off civilization seeks a new world to conquer and inhabit -- Earth!

Actors : Silvano Tranquilli, Luc Merenda, Carlo Alighiero, Richard Conte,
Directors : Sergio Martino,

When Milano police lieutenant Giorga's chief is murdered by an organized crime ring, he vows to avenge his boss's death. Going undercover to continue the chief's investigation, he plans to ...

Actors : Cameron Mitchell, Faith Clift, Marc Lawrence, Richard Moll,

Police detective, Mitchell, investigating the death of a victim of a Nazi concentration camp discovers a nightclubbing playboy who has strange powers over women and is seemingly ageless.

Actors : Ralph Bellamy, Forrest Tucker, Bob Hope, Eva Marie Saint,
Directors : Paul Bogart,

Bob Hope is a stressed out talk show host who is sent on a vacation to Arizona on doctor's orders and has to play Sherlock Holmes with his wife, the lovely Eva Marie Saint, to solve a series of murders that has Bob as the prime suspect.

Actors : Guido Mannari, Elizabeth Taylor, Ian Bannen, Mona Washbourne,
Directors : Giuseppe Patroni Griffi,

Mentally disturbed spinster Lise experiences a series of bizarre encounters in Rome as she searches for someone to murder her.

Actors : Dana Wynter, Michael Burns, Jay Silverheels, Glenn Ford,
Directors : Gary Nelson,

A bounty hunter takes in the son of a man he killed.

Actors : Tom Laughlin, Delores Taylor, E.G. Marshall, Teresa Kelly,
Directors : Tom Laughlin,

After a senator suddenly dies after completing (and sealing) an investigation into the nuclear power industry, the remaining senator and the state governor must decide on a person who will ...

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 ...