Best Investigation movies of 1970s

Actors : Lino Ventura, Paula Kelly, Isaac Hayes, Fred Williamson,
Directors : Duccio Tessari,

An ex-convict priest and a framed former policeman hunt a machine-gun killer behind a bank robbery.

Actors : Midori Fujita, Shin Kishida, Chôei Takahashi, Sanae Emi,
Directors : Michio Yamamoto,

A doctor investigates the murders of several women at a lakeside resort. His investigation leads him to believe that a vampire is responsible for the murders. He sets out to track the vampire down.

Actors : Ferdinando Murolo, Luc Merenda, Enzo Cannavale, Adolfo Lastretti,
Directors : Michele Massimo Tarantini,

Police Commissioner Dario Mauri investigates the activities of a drug ring led by Don Domenico Laurenzi.

Actors : Robert Ginnaven, Gary Brockette, Rod Serling, John Leslie,
Directors : Harry Thomason,

Three eerie tales based on actual events are enacted in this film. First, three college students play a prank on a geeky classmate, who is accidentally shot and killed. His vengeful mother ...

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 : 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

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 : Alberto de Mendoza, Claude Jade, Frederick Stafford, Femi Benussi,
Directors : Germán Lorente,

Sandro, a detective, finds his wife strangled. His girl-friend Tiffany, who works as photographer, makes a "Blow up" from a photo, what Sandro finds beside the victim. Sandro and Tiffany ...

Actors : Robert Webber, Tomas Milian, Massimo Vanni, Lilli Carati,
Directors : Bruno Corbucci,

Tomas Milian as the unconventional undercover cop with a pet mouse named 'Serpico'. Still difficult for an investigation commissioner Nico Giraldi, this time struggling with a gang who commits theft in luxury apartments in Rome.

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 : Shin'ichi Chiba, Masaru Shiga, Janet Hatta, Eiko Matsuda,
Directors : Kinji Fukasaku,

A tough-as-nails cop from Okinawa investigates a savage murder in Tokyo's nightlife district. Originally dismissed as a bumpkin, he soon proves more savvy than the local police.

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 : 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 : James Westmoreland, Anitra Ford, Alan Landers, Anne Randall,
Directors : Andy Sidaris,

The sleazy and dangerous adventures of a gorgeous female private detective.

Actors : Joe Turkel, Tom Drake, Sean Kenney, Steve Oliver,
Directors : John Lawrence,

A serial killer murders a businessman's wife, then blackmails the man into procuring young girls for him to murder. The businessman hires a gang of renegade motor-cyclists to kidnap girls for him.

Actors : Ligia Diniz, Paulo Gracindo, Paulo Guarnieri, Cristina Aché,
Directors : Bruno Barreto,

Rio de Janeiro police investigator Galvão is pursuing two trails, one professional and one personal. While he tracts a serial killer of taxi-drivers, he also seeks his estranged daughter, ...

Actors : Joseph Fürst, Judith Anderson, Alex Cord, Michael Craig,
Directors : Terry Bourke,

A sheriff investigates why the guests at a local hostelry check in, but never check out.

Actors : James Mason, Curd Jürgens, Jean Seberg, Stephen Boyd,
Directors : Romain Gary,

Interpol investigates the freelance killings of drug and porn peddlers.

Actors : Joe Don Baker, Tyne Daly, Robert Loggia, Richard Jaeckel,
Directors : Earl Bellamy,

After a wave of unsolved car thefts, an insurance company calls in private investigator Pete Nobeck to solve the case. While the chief of police isn't thrilled about having an outsider come...