Reflections in Black (1975)

There is something horribly wrong with the bodies found in the dark city streets. Some are mutilated while others have the Price equation (wΔz = Cov (w,z) = βwzVz) carved into their flesh. Detective Eddie Argo and his new partner Helen Westcott unearth the meaning of the odd equation and realise each victim is being offered a gruesome choice: kill your loved ones, or be killed. Before long it becomes clear that the perpetrator has suffered a similar fate and is now coping by seeking a way to solve this philosophical dilemma.

When a madman dubbed 'Scorpio' terrorizes San Francisco, hard-nosed cop, Harry Callahan – famous for his take-no-prisoners approach to law enforcement – is tasked with hunting down the psychopath. Harry eventually collars Scorpio in the process of rescuing a kidnap victim, only to see him walk on technicalities. Now, the maverick detective is determined to nail the maniac himself.

Jennifer Hills is still tormented by the brutal sexual assault she endured years ago. She’s changed identities and cities, reluctantly joining a support group where she begins to piece together a new life. But when her new friend’s murderer goes free and the tales of serial rapists haunt her, Jennifer will hunt down the men responsible and do what the system won’t – make them pay for their crimes in the most horrific ways imaginable. Only this time, no jury may be able to save her.

Special Agent Jennifer Marsh works in an elite division of the FBI dedicated to fighting cybercrime. She thinks she has seen it all, until a particularly sadistic criminal arises on the Internet. This tech-savvy killer posts live feeds of his crimes on his website; the more hits the site gets, the faster the victim dies. Marsh and her team must find the elusive killer before time runs out.

Warren Stacy, an office equipment repairman, begins murdering women after they reject his advances. To minimize the evidence, Stacy always kills while naked, wearing nothing but gloves, and further evades the law with his strong alibis. Veteran detective Leo Kessler is convinced of Stacy's guilt and begins using questionable methods to catch him.

Rookie cop, Amelia Donaghy reluctantly teams with Lincoln Rhyme – formerly the department's top homicide detective but now paralyzed as a result of a spinal injury – to catch a grisly serial killer dubbed 'The Bone Collector'. The murderer's special signature is to leave tantalizing clues based on the grim remains of his crimes.

Chrissie and her friends set out on a road trip for a final fling before one is shipped off to Vietnam. Along the way, bikers harass the foursome and cause an accident that throws Chrissie from the vehicle. The lawman who arrives on the scene kills one of the bikers and brings Chrissie's friends to the Hewitt homestead, where young Leatherface is learning the tools of terror.

Two homicide detectives are on a desperate hunt for a serial killer whose crimes are based on the "seven deadly sins" in this dark and haunting film that takes viewers from the tortured remains of one victim to the next. The seasoned Det. Sommerset researches each sin in an effort to get inside the killer's mind, while his novice partner, Mills, scoffs at his efforts to unravel the case.

Complete strangers stranded at a remote desert motel during a raging storm soon find themselves the target of a deranged murderer. As their numbers thin out, the travelers begin to turn on each other, as each tries to figure out who the killer is.

A cartoonist teams up with an ace reporter and a law enforcement officer to track down an elusive serial killer.

During the late 1980s, two detectives in a South Korean province attempt to solve the nation's first series of rape-and-murder cases.

A gang of ruthless highway killers kidnap a wealthy couple traveling cross country only to shockingly discover that things are not what they seem.

Two police detectives try to catch a serial killer who is stalking a rural California drive-in theater, randomly killing people with a sword.

After being sent to the electric chair, a serial killer uses electricity to come back from the dead and carry out his vengeance on the football player who turned him in to the police.

Cherry Falls is a quiet little town - until the night that a serial killer begins preying on its youth. After a third teen is found slain, the killer's modus operandi emerges: the victims were all virgins. Sheriff Marken is concerned for the safety of the teens in general and in particular his own daughter Jody, who is still a virgin...

A reporter and a blind, retired journalist try to solve a series of murders. The crimes are connected to experiments by a pharmaceutical company in secret research. The two end up becoming targets of the killer.

A seasoned police detective and his partner have just uncovered a string of unusual murders that lead them to a serial killer, who believes that he is the descendant of Judas.

In 1974, Terry commits a murder and pins it on his twin brother, Todd. Ten years later, Todd escapes from a mental institution on the same day as Terry’s murderous instincts resurface.

A burned-out New York police detective teams up with a college psychoanalyst to track down a vicious serial killer randomly stalking and killing various young women around the city.

A group of young horror fans go searching for a film that mysteriously vanished years ago but instead find that the demented killer from the movie is real, and he's thrilled to meet fans who will die gruesomely for his art.

Beautiful Arabella is an insatiable nymphomaniac with a crippled writer husband, Francesco, who is unable to pleasure her. Instead, Arabella searches for lovers in elicit dens of debauchery, bedding an endless array of men. However, when her husband discovers her having sex with a stranger in their shed, Arabella panics and kills the man, only to discover that her sudden act of violence arouses creative inspiration in Francesco. Covering up the crime, Francesco asks his wife to further explore her sexual fantasies and report back on her experiences. Unfortunately, Arabella's lovers are subsequently visited by someone else... a vengeful murderer who violently castrates them...

A young hippie kills a man, and seeks refuge at the lakeside house of three beautiful sisters, who seem to be hiding a dark secret.

A group of hip friends gather at a Gothic castle owned by a wheelchair- bound older relative of one of the girls. One couple in the group, unbeknownst to the others, is smuggling heroin in some Chinese artifacts the protagonist has brought back from the Orient to give to her elderly relative. Meanwhile the deranged uncle of the protagonist, who supposedly killed the protagonist's mother (his own sister) and cut out her eyes, is wandering the catacombs spying on everyone. When one of the guests is murdered and her eyes subsequently disappear, suspicion naturally falls on the mad uncle. But is he being set up?

A group of strangers are summoned to the secluded home of Patrick, a young man rendered comatose after a freak accident, but soon find themselves falling victim to Patrick's mysterious psychic powers and murderous rage.

A blind boy receives a vision that warn him of the birth of the anti-christ.

An archeologist's wife has recurring nightmares about ritual killings in an Etruscan tomb while her husband is away excavating a lost temple. After a phone call where she is forced to listen to him being murdered, she travels to the excavation site to solve the mystery of his death.

After a peaceful sailboat ride, four young people, including rich kid Bill, Joe, Fred and Jane, knock on the door of a secluded villa after their dune buggy runs out of gas. Earlier in the day, Bill had given the lovely Jane a pearl necklace with a supposedly paranormal history, and this later opens up a can of worms. They are invited to spend the night at the mansion, owned by Lord Alexander and Lady Alexander, who happen to be hosting a strange ceremony that night attended by a group of eccentrics in black robes. During the evening, Jane exits her sleep chamber, seemingly in some kind of trance, and is lured to a sacrificial alter where the robed houseguests are hovering over her. As a knife is about to be plunged into the young lady, her three friends come to the rescue, but they are also witness to a chaotic mass murder catastrophe in which they flee with feelings of guilt and uncertainty.

When Marialé is a little girl, she sees her father murder the two lovers and then shoot himself in the head. About 30 years later, she lives in a mansion and has mental problems. She invites a number of friends and one by one they become murdered.

A blind pianist tries to figure out who is responsible for a string of murders using a black cat with its claws dipped in curare.

A couple of wandering hippies meet a man by the name of Antonio who takes them to the home where he lives with his sister and brother-in-law. There they meet several strange characters: a gypsy woman, a prostitute and a disturbing drunk. The host tells them that he is a producer of wines and loves to entertain strange people. In fact he is a madman who has created a mechanism that can suck blood from human bodies.

Successful businessman Melvin Dovereux is caught in a traffic jam caused by a funeral procession. Soon he is haunted by visions of a hearse chasing him and a woman in a sports car. Could the funeral procession actually be for him?

A murdered couple return from the beyond to care for their two young children, as well as seek revenge against their killer, accept their children's step parents, and try to prevent their house from being sold.

A coven of devil-worshiping monks living in New York City search for victims for their sacrificial ceremonies.