Best Psychopath movies of 1970s

Actors : Albert Brooks, Jodie Foster, Robert De Niro, Cybill Shepherd,
Directors : Martin Scorsese,

A mentally unstable Vietnam War veteran works as a night-time taxi driver in New York City where the perceived decadence and sleaze feeds his urge for violent action, while attempting to save a preadolescent prostitute in the process.

Actors : Malcolm McDowell, Warren Clarke, Patrick Magee, Michael Bates,
Directors : Stanley Kubrick,

In the future, a sadistic gang leader is imprisoned and volunteers for a conduct-aversion experiment, but it doesn't go as planned.

Actors : Sissy Spacek, Ramon Bieri, Martin Sheen, Warren Oates,
Directors : Terrence Malick,

An impressionable teenage girl from a dead-end town and her older greaser boyfriend embark on a killing spree in the South Dakota badlands.

Actors : Paul A. Partain, Edwin Neal, Allen Danziger, Marilyn Burns,
Directors : Tobe Hooper,

Two siblings visit their grandfather's grave in Texas along with three of their friends and are attacked by a family of cannibalistic psychopaths.

Actors : Clint Eastwood, Reni Santoni, Harry Guardino, Andrew Robinson,
Directors : Don Siegel,

When a mad man calling himself 'the Scorpio Killer' menaces the city, tough as nails San Francisco Police Inspector Harry Callahan is assigned to track down and ferret out the crazed psychopath.

Actors : Jon Finch, Barbara Leigh-Hunt, Anna Massey, Barry Foster,
Directors : Alfred Hitchcock,

A serial murderer is strangling women with a necktie. The London police have a suspect, but he is the wrong man.

Actors : Lucy Grantham, Fred J. Lincoln, Sandra Peabody, David Hess,
Directors : Wes Craven,

Two teenage girls head to a rock concert for one's birthday. While trying to score marijuana in the city, they are kidnapped and brutalized by a gang of psychotic convicts.

Actors : Al Pacino, Paul Sorvino, Karen Allen, Richard Cox,
Directors : William Friedkin,

A police detective goes undercover in the underground S&M gay subculture of New York City to catch a serial killer who is preying on gay men.

Actors : Clint Eastwood, Donna Mills, John Larch, Jessica Walter,
Directors : Clint Eastwood,

A brief fling between a male disc jockey and an obsessed female fan takes a frightening, and perhaps even deadly turn when another woman enters the picture.

Actors : Samantha Eggar, Henry Beckman, Art Hindle, Oliver Reed,
Directors : David Cronenberg,

A man tries to uncover an unconventional psychologist's therapy techniques on his institutionalized wife, amidst a series of brutal murders.

Actors : David Warner, Malcolm McDowell, Mary Steenburgen, Charles Cioffi,
Directors : Nicholas Meyer,

H.G. Wells pursues Jack the Ripper to the 20th Century when the serial murderer uses the future writer's time machine to escape his time period.

Actors : James Fox, Mick Jagger, Michèle Breton, Anita Pallenberg,

Chas, a violent and psychotic East London gangster needs a place to lie low after a hit that should never have been carried out. He finds the perfect cover in the form of guest house run by...

Actors : Clive Revill, Roddy McDowall, Gayle Hunnicutt, Pamela Franklin,
Directors : John Hough,

Physicist Lionel Barrett and his wife lead a team of mediums into the Belasco House, which is supposedly haunted by the victims of its late owner, a six-foot-five serial killer.

Actors : Faye Dunaway, Tommy Lee Jones, Rene Auberjonois, Brad Dourif,
Directors : Irvin Kershner,

A famous fashion photographer develops a disturbing ability to see through the eyes of a killer.

Actors : Abigail Clayton, Kelly Piper, Joe Spinell, Caroline Munro,
Directors : William Lustig,

A psychopath, troubled by his childhood abuse, loose in New York City, kills young women and takes their scalps as his trophies. Will he find the perfect woman in a photographer, and end his killing spree?

Actors : Elton John, Ann-Margret, Roger Daltrey, Oliver Reed,
Directors : Ken Russell,

A psychosomatically deaf, dumb and blind boy becomes a master pinball player and, subsequently, the object of a religious cult.

Actors : Tony Musante, Enrico Maria Salerno, Suzy Kendall, Eva Renzi,
Directors : Dario Argento,

A witness of an attack, a writer becomes stalked by a serial killer.

Actors : Neville Brand, Mel Ferrer, Carolyn Jones, Marilyn Burns,
Directors : Tobe Hooper,

A psychotic redneck who owns a dilapidated hotel in rural East Texas kills various people who upset him or his business, and he feeds their bodies to a large crocodile that he keeps as a pet in the swamp beside his hotel.

Actors : John Hurt, Judy Geeson, Pat Heywood, Richard Attenborough,
Directors : Richard Fleischer,

Based on the real-life case of the British serial killer John Christie, and what happened to his neighbors Tim and Beryl Evans.

Actors : Ben Johnson, Dawn Wells, Jimmy Clem, Andrew Prine,
Directors : Charles B. Pierce,

A Texas Ranger hunts for a hooded serial killer terrorizing the residents of a small town, set in 1946 Texas. Loosely based on a true story.