Best Investigation movies of 1960s

Actors : Eileen Lord, Ed Garrabrandt, Dick Lord, Frank Geraci,
Directors : Herb Stanley,

A deranged, wealthy woman offers $100,000 to three men if they can stay alive for 24 hours in Manhattan, and then hunts them down.

Actors : Anthony Eisley, John Lodge, Thordis Brandt, Alvy Moore,
Directors : William O. Brown,

A psychic researcher and his assistants investigate a series of murders of beautiful young women.

Actors : Arch Hall Jr., Rex Holman, Burr Middleton, Robert Paget,
Directors : Leigh Jason,

A gang of teenage delinquents terrorize a small community by stealing cars and stripping them for parts, then selling the parts to a crooked junkyard owner. The police and an insurance company investigator set out to break up the gang.

Actors : Daliah Lavi, Beba Loncar, Richard Johnson, James Villiers,
Directors : Ralph Thomas,

A series of unexplainable accidents befall the people and companies responsible for developing the world's first supersonic airliner (SST1). A British agent is sent to investigate and with ...

Actors : David Janssen, Jeanne Crain, Jacques Aubuchon, Dina Merrill,
Directors : Joseph M. Newman,

A famous movie star's fan club secretary has been brutally murdered. She has in her office old newspaper clippings regarding a missing heiress. Did the secretary know something about the mystery of the heiress? David Janssen investigates.

Actors : Khoren Abrahamyan, Sos Sargsyan, Azat Sherents, Mher Mkrtchyan,
Directors : Henrik Malyan,

Calm of the mountain village is disturbed by the investigation on stray sheep.

Actors : Jean Marais, Jill Haworth, Dany Robin, Raymond Pellegrin,
Directors : André Hunebelle,

The Marquis Rodolphe de Sombrueil accidentally runs over a working man with his carriage and helps his widow -- unjustly accused of robbery -- to find her missing daughter.

Actors : Mieko Nishio, Chieko Matsubara, Akemi Kita, Akira Kobayashi,
Directors : Yasuharu Hasebe,

A military photographer takes a cute stewardess out to dinner where she is promptly kidnapped. Deciding that he has fallen in love with the girl, our "hero" decides to investigate her kidnapping himself.

Actors : Red Buttons, Shirley Jones, Carolyn Jones, Gig Young,
Directors : George Sidney,

The SOS from the boys upstairs bedroom is made by a Navy Signal Lamp, which was a gift from Uncle Cy.

Actors : Ombretta Colli, Renato Baldini, Wilbert Bradley, Giacomo Rossi Stuart,
Directors : Antonio Margheriti,

Amidst a general melting of the ice caps, a weather station in the Himalayas is destroyed and Gamma I commander Rod Jackson and his partner, Frank Pulasky are sent to investigate. Joined by...

Actors : Anne Jackson, Eli Wallach, George Kennedy, Steve Ihnat,
Directors : Richard A. Colla,

A dying man frames himself for the kidnapping and murder of an industrialist so his wife and daughter can benefit from the reward money. However, his plan goes awry when he is cured!

Actors : Richard Häussler, Walter Rilla, Karin Dor, Joachim Fuchsberger,
Directors : Harald Reinl,

A serial-killer is murdering the ladies of a night club. Detective Gray is seeking for the killer but can only find a lot of gangsters. And the killer is about to act again...

Actors : Sylva Koscina, Eli Wallach, Kenneth Haigh, Kirk Douglas,
Directors : David Lowell Rich,

A cop quits the force after too much disappointment in the system. He becomes a bodyguard of a rich recent widow. She is on trial for her husband's murder. He decides to help her clear her name... and get over her husband.

Actors : Marianne Benet, Antonio Ferrandis, Teresa Gimpera, Marcos Martí,
Directors : Vicente Aranda,

The inhabitants of a strange desert Barcelona are gradually leaving the city in a panic group. The victims of a serial killers seem to feel strangely attracted by their executioners. Only ...

Actors : Eve Bork, Michael Findlay, Ron Skideri, Linda Boyce,
Directors : Michael Findlay,

A weapons dealer who murdered his unfaithful stripper wife goes on a killing spree, bumping off exotic dancers and hookers while plotting revenge on his wife's lover.

Actors : Donna Stone, Janet Banzet, Uta Erickson, Michael Findlay,
Directors : Michael Findlay,

A weapons expert who murdered his unfaithful stripper wife and her lover goes on a killing spree, bumping off exotic dancers and hookers, while plotting the demise of his wife's swinging bisexual sister and her kinky boyfriend.

Actors : Chris Howland, Alexander Engel, Janine Reynaud, Rosanna Yanni,
Directors : Jesús Franco,

"Red Lips" are two female detectives trying to find missing models and dancers. A pop artist called Klaus Thriller and his werewolf-like assistant, Morpho, are the main suspects for the ...

Actors : Janine Lenon, Steve Hollister, Joanna Mills, Fleurette Carter,
Directors : Anton Holden,

In Manhattan, prostitutes are being murdered by a psycho. A detective is assigned to track him down and bring him in.

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 : Stefan Gadularov, Dimitar Panov, Georgi Kaloyanchev, Nevena Kokanova,
Directors : Rangel Vulchanov,

Along with the investigation of an ordinary crime, complex human relations are found out.