Best Investigation movies of 1970s

Actors : Monica Gayle, Nona Carver, L.G. Allard, Linda Colpin,
Directors : Edward D. Wood Jr.,

A couple hire a detective to locate their missing daughter. He finds her in a "house of ill-repute."

Actors : Joy Mukherjee, Ram Mukherjee, Toy Mukherjee, Deb Mukherjee,
Directors : Ram Rano,

A maniac serial killer on the prowl, hunting assorted nubile lasses. A mentally unstable ex-army officer who is an utter misogynist. Are they the same man?

Actors : Marthe Keller, Maurice Ronet, Karin Dor, Raymond Pellegrin,
Directors : Alfred Vohrer,

The yacht of millionaire Hellmann explodes in the Mediterranean Sea, with him and 8 men crew on board. Insurance agent Lucas investigates at the Cote D'Azur, because there's the suspicion ...

Actors : Tomoko Saitô, Toshiyuki Nishida, Isao Natsuyagi, Haruko Wanibuchi,
Directors : Kôsei Saitô,

Famous detective Kindaichi investigates a series of mysterious murders revolving around a wealthy family.

Actors : Marília Pêra, Edson França, Daniel Filho, José Wilker,
Directors : Alberto Salvá,

Call girl is found dead in her apartment and the police has a special interest to solve the case, since the investigator was a friend of the family's. But there are too many big names in the list of suspects.

Actors : Shivaji Ganesan, Nagesh, Y.G. Mahendran, Chendamarai,
Directors : Vietnam Veetu Sundaram,

Emotional drama of two lawyers - uncle and nephew - Shivaji Ganesan in dual role. Uncle obsessed with legalities alone whereas the nephew intent on looking at the moralities too.

Actors : Charles Heung, Fu-Wan Chin, Tina Chin-Fei, Ching Chen,
Directors : Tian-Lin Wang,

Returning home from being abroad, Tang Kin Ko discovers his family has been killed and his sister is missing. Tang is determined to find the killer and the disappearance of his sister, so ...

Actors : Yong-woon Kwon, Seung-mi Kim, Bobby Kim,
Directors : Young Nam Ko,

Interpol is called in to investigate the murder of the inventor of a laser dubbed Cobalt 70 and the theft of the diamond which operates it.

Actors : Judy Morris, Jack Thompson, Shane Porteous, Jacqueline Kott,
Directors : Terry Ohlsson,

Sydney homicide detective Sergeant Scobie Malone and his offsider investigate the murder of Helga, whose corpse is found in the basement of the Sydney Opera House.

Actors : Andrés Mejuto, Carlos Romero Marchent, Orchidea de Santis, Peter Lee Lawrence,
Directors : Rafael Romero Marchent,

After the killing of his father, Danny Lom finds work in a village, and with the help of the sheriff's daughter, investigates the crime.

Actors : Po Wang, Sung-il Shin, Dae-kun Lee,

The famous detective called 'the Hedgehog' finds himself the reluctant pawn of a North Korean spy who is trying to gain control of the Busan smuggling operations.

Actors : Sean McCann, Lawrence Benedict, Frank Moore, Céline Lomez,
Directors : Joyce Wieland,

A young woman marries a wealthy man she isn't in love with, but finds romance instead with the couples' painter friend.

Actors : Chiang Chao, Chun Chao, Jackie Chen, Fu-fen Chao,
Directors : Hung-Chang Wang,

Two agents investigate missing ammunition from the Chinese military. Not a single shot is fired and it is all kung fu fighting start to finish.

Actors : Jiufeng Shi, Xiang Yan, Min Xu, Xinghuo Zhong,
Directors : Yaoting Shen,

A murder investigation in Donghai City leads to a larger conspiracy.

Actors : Rossella Bergamonti, Stelio Candelli, Patrizia Viotti, Veronika Korosec,
Directors : Leopoldo Savona,

A man finds his wife brutally murdered. He has no alibi so is instructed by his lawyer to go into hiding in an abandoned hotel. Strange occurrences start happening immediately.

Actors : Cheng Yi Chi, Han Chiang, Lap Ban Chan, Chok Chow Cheung,

Part 1 : 'Gun Snatchers' - Two criminals wanted for murder are turned in by one of their own. Part 2: 'Arson' - A Triad revenge plan to burn down a nightclub goes wrong and results in the deaths of five people.

Actors : Lori Saunders, Robert Ginnaven, Lou Hoffman, Dean Jagger,
Directors : Harry Thomason,

A young woman just released from a mental hospital moves back in with her family. However, she is soon troubled by disturbing visions in which she commits a series of axe murders.

Actors : Elke Sommer, Dean Stockwell, Bradford Dillman, Patrick Mower,
Directors : Sidney Hayers,

An imprisoned gypsy makes a break for it which triggers a manhunt.

Actors : Jun Fubuki, Yûdai Ishiyama, Yoshio Harada, Jun Hamamura,
Directors : Kazuo Kuroki,

In a melancholic seaside town, the bodies of two lovers who committed double suicide are found on the shore. A local reporter and the dead woman's pimp begin to investigate and find out that something very suspicious is going on.

Actors : Dae-yeob Lee, In-suk Ahn, Mu-ryong Choi, Hyeok Jang,
Directors : Tae-ho Seol,

Nan-hie is slowly coerced into a life of crime by her boyfriend, Park. She is trained in assassination techniques and sent to assassinate the head of the Special Investigation Unit. However...