Best Investigation movies of 1970s

Actors : Jean Yanne, Pascal Ferone, Antonio Passalia, Stéphane Audran,
Directors : Claude Chabrol,

An unlikely friendship between a dour, working class butcher and a repressed schoolteacher coincides with a grisly series of Ripper-type murders in a provincial French town.

Actors : Richard Harris, Charlotte Rampling, Will Sampson, Bo Derek,
Directors : Michael Anderson,

A hunter squares off against a killer whale seeking vengeance for the death of its mate.

Actors : James Mason, Susan Clark, Christopher Plummer, David Hemmings,
Directors : Bob Clark,

Sherlock Holmes investigates the murders commited by Jack the Ripper and discovers a conspiracy to protect the killer.

Actors : Marty Feldman, Gene Wilder, Madeline Kahn, Dom DeLuise,
Directors : Gene Wilder,

The younger brother of the consulting detective tries to steal Sherlock's glory by solving an important case assisted by an eccentric Scotland Yard detective and a lovely but suspicious actress.

Actors : Mel Ferrer, Judy Geeson, Richard Attenborough, John Wayne,
Directors : Douglas Hickox,

Chicago police lieutenant Jim Brannigan is sent to the UK to escort organized crime boss Ben Larkin back to the USA but Larkin's hit-men prepare an ambush for Brannigan.

Actors : Maximilian Schell, Maria Schell, Jon Voight, Mary Tamm,
Directors : Ronald Neame,

Following the suicide of an elderly Jewish man, a journalist in possession of the man's diary investigates the alleged sighting of a former SS captain, who allegedly commanded a concentration camp during WWII.

Actors : Eileen Brennan, Sid Caesar, Peter Falk, Ann-Margret,
Directors : Robert Moore,

San Francisco, 1940, detectives, dames, documents, Nazis, and a treasure.

Actors : John Glover, Roy Scheider, Janet Margolin, Sam Levene,
Directors : Jonathan Demme,

Harry breaks down and loses his job after his wife is assassinated - could it be his turn next ?

Actors : Don Knotts, Susan Clark, Bill Bixby, Tim Conway,
Directors : Norman Tokar,

Three orphan children strike gold in 1878 California.

Actors : Deborah Raffin, Sylvia Sidney, Sandy Dennis, Tony Lo Bianco,
Directors : Larry Cohen,

A New York detective investigates a series of murders committed by random New Yorkers who claim that "God told them to."

Actors : Jerry Daugirda, James McIntyre, H.B. Halicki, Marion Busia,
Directors : H.B. Halicki,

Insurance investigator Maindrian Pace and his team lead double-lives as unstoppable car thieves. When a South American drug lord pays Pace to steal 48 cars for him, all but one, a 1973 Ford...

Actors : Marjoe Gortner, Pamela Franklin, Jon Cypher, Ralph Meeker,
Directors : Bert I. Gordon,

A group of friends travel to a remote Canadian island to hunt, only to be attacked by giant killer animals which have populated the place.

Actors : Vincent Price, Judy Huxtable, Peter Cushing, Christopher Lee,
Directors : Gordon Hessler,

A serial killer who drains his victims' blood is on the loose in London; the police follow him to a house owned by an eccentric scientist.

Actors : Lieux Dressler, Woody Strode, William Shatner, Tiffany Bolling,
Directors : John 'Bud' Cardos,

Investigating the mysterious deaths of a number of farm animals, vet Rack Hansen discovers that his town lies in the path of hoards of migrating tarantulas. Before he can take action, the ...

Actors : Maria Luisa Santella, Francesco Anniballi, Maria Bosco, Nino Manfredi,
Directors : Ettore Scola,

Four generations of a family live crowded together in a cardboard shantytown shack in the squalor of inner-city Rome. They plan to murder each other with poisoned dinners, arson, etc. The ...

Actors : Peter Cushing, Christopher Lee, Michael Coles, William Franklyn,
Directors : Alan Gibson,

In London in the 1970s, Scotland Yard police investigators think they have uncovered a case of vampirism. They call in an expert vampire researcher named Van Helsing (a descendant of the ...

Actors : Martin Balsam, John Cassavetes, Charlton Heston, Beau Bridges,
Directors : Larry Peerce,

A psychotic sniper plans a massive killing spree in a Los Angeles football stadium during a major championship game. The police, led by Captain Peter Holly (Charlton Heston) and SWAT ...

Actors : Eddie Albert, Diana Muldaur, Colleen Dewhurst, John Wayne,
Directors : John Sturges,

Seattle cop Lon McQ investigates the murder of his best friend and the corruption within the police department.

Actors : Ben Johnson, Rod Taylor, Ann-Margret, John Wayne,
Directors : Burt Kennedy,

A gunhand named Lane is hired by a widow, Mrs. Lowe, to find gold stolen by her husband so that she may return it and start fresh.

Actors : Victor Arnold, Roy Scheider, Jerry Leon, Tony Lo Bianco,
Directors : Philip D'Antoni,

A tough detective who is part of an elite New York City unit is trying to find out who killed his partner, but uncovers a plot to kidnap mobsters for money.