Best Investigation movies of 1970s

Actors : Lau Chan, Yi Tao Chang, Dragon Lee, Lik Cheung,
Directors : Joseph Kong,

John Liu, the legendary Northern Kick expert is sent to investigate an antiques smuggling gang working out of Canton.

Actors : Paul Muller, Jesús Franco, Martine Stedil, Lina Romay,
Directors : Jesús Franco,

In Puerto Rico, a down-on-his-luck private detective is hired by a woman to take compromising photos of her husband, a notorioous nightclub owner. After he finishes the job, he finds ...

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 : 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.

Actors : Ernest Borgnine, James Blendick, Henry Silva, Cliff Robertson,
Directors : Harvey Hart,

When boredom, pride and a mad second of misjudgement leaves a hunter shot dead by one of five combat veterans also hunting in the Canadian hills, it is expected a police investigation will ...

Actors : Massimo De Cecco, Yanti Somer, John Richardson, Walter Maestosi,
Directors : Alfonso Brescia,

A spaceship investigates an out-of-control planet and discovers a computer that controls an underground civilization.

Actors : Franco Fabrizi, Arthur Kennedy, Claudio Cassinelli, Sara Sperati,
Directors : Luciano Ercoli,

Luciano Ercoli's Killer Cop is actually an entirely serious Italian crime thriller (or 'Poliziotteschi'), that handles themes such as murder and terrorism. ..

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 : 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 : Edwige Fenech, Alvaro Vitali, Renzo Montagnani, Michele Gammino,
Directors : Nando Cicero,

Doctor Eva Marini takes up a position at an army base to investigate the sexual behavior of the Italian male soldier and soon finds out she's taken on more than she bargained for.

Actors : Sara García, Manolo Fábregas, Lucha Villa, Héctor Suárez,
Directors : Luis Alcoriza,

A mechanic takes his family to a car race and a series of events occur which brings problems, betrayals, violence and the unexpected death of an elderly person.

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 : Ling Chia, Kuan Tai Chen, Lin Chiao, Sing Chen,
Directors : Hsueh Li Pao,

A kung-fu fighting detective investigating the murder of the emperor's wife uncovers a high-ranking conspiracy.

Actors : Floy Dean, Teresa Graves, Fred Williamson, Rosemary Forsyth,
Directors : Jack Arnold,

Private detective investigated a series of murders connected with a drug ring in Venice, California.

Actors : Jon Finch, Tony Beckley, Judy Geeson, Christopher Lee,
Directors : Sidney Hayers,

Anonymous notes accuse a psychiatrist of having murdered his wife. A bedraggled policeman attempts to uncover the truth behind her disappearance.

Actors : Patricia Loran, Orchidea de Santis, Paul Naschy, Renzo Marignano,
Directors : José Luis Madrid,

In this version of the famous story of the London serial killer, Jack not only likes to kill prostitutes but he is a cannibal as well.

Actors : Joel Grey, Dorothy Tristan, Elizabeth Wilson, Cliff Robertson,
Directors : Frank Perry,

A small-town police chief investigating a murder is offered help by a self-described psychic. However, when the chief discovers that the "psychic" is in possession of information known only...

Actors : Peter De Anda, Raymond St. Jacques, Percy Rodrigues, Godfrey Cambridge,
Directors : Mark Warren,

Sequel to Cotton comes to Harlem. Another bad influence is hitting Harlem and Gravedigger and Coffin Ed are the two cops who will stop it. Charleston Blue was a prohibition era black ...

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 : Franco Ressel, Joan Collins, Maurizio Merli, Werner Pochath,
Directors : Stelvio Massi,

An Italian private investigator tries to get to the bottom of a suspicious kidnapping case with the help of an exotic dancer