Delitto d'autore (1974)

Sam Dalmas (Tony Musante) é um escritor norte-americano que vive em Roma. Uma noite ele testemunha uma tentativa de assassinato cometida por um misterioso homem vestido de preto. A vítima sobrevive, mas como a polícia não consegue descobrir quem é o serial killer, Sam decide investigar por conta própria.

When socialite and heiress Julie Wardh begins receiving blackmail letters attributed to a mysterious serial killer, she suspects her cruel and sadistic former lover Jean is behind them. With her husband Neil frequently out of town, she falls into the arms of her friend's cousin George, and as the unknown assassin begins to make his move, she fears that one of the three men in her life may be the killer.

Vários assassinatos acontecem numa paradisíaca baía, começando pela condessa Donati, a proprietária do local. Jovens adolescentes com os hormônios em ebulição, moradores das redondezas e herdeiros daquela propriedade - todos parecem tornar-se vítimas de um assassino misterioso, embora a cada momento do filme mais de uma pessoa tenha motivos para matar seus semelhantes.

A wealthy playboy gathers a group of bourgeois friends at his isolated beach house for a weekend of relaxation. When bodies start pilling up, they realize they’re trapped with a killer in their midst, sending them in a frenzy to figure out who amongst them is killing the others before they are killed next.

Paris, verão de 1979. Anne é produtora de pornografia gay barata. Quando Lois, sua editora e companheira, a deixa, ela tenta recuperá-la, fazendo um filme mais ambicioso com o extravagante Archibald.

Várias meninas são brutalmente assassinadas por uma pessoa vestindo trajes semelhantes a de um padre, em uma faculdade para mulheres. A polícia e os professores são incapazes de localizar o assassino e evitar novas mortes. Enrico, que tem um caso romântico com uma de suas alunas, Elizabeth, torna-se o principal suspeito.

Um repórter de jornal e um jornalista aposentado e cego tentam resolver uma série de assassinatos ligados a projetos experimentais de pesquisa ultra secreta de uma empresa farmacêutica e, ao fazê-lo, tornam-se alvos do assassino.

A painter facing a creative block arranges to spend the weekend in the country at his mistress's villa. While staying there, his sanity begins to disintegrate.

Em Praga, um jornalista americano investiga o desaparecimento repentino da namorada. Com trilha de Ennio Morricone e excelente elenco, essa pequena obra-prima é um giallo original que antecipa “De Olhos Bem Fechados.”

A San Francisco doctor encounters a prostitute who bears a striking resemblance to his late wife.

Após a execução de um líder de gangue de motoqueiros condenado por assassinato, um motociclista de capacete faz uma matança durante as férias de primavera na Flórida.

Valentina, a beautiful fashion model, takes an experimental drug as part of a scientific experiment. While influenced by the drug, Valentina has a vision of a young woman being brutally murdered with a viciously spiked glove. It turns out that a woman was killed in exactly the same way not long ago and soon Valentina finds herself stalked by the same killer.

A rich man gathers together friends and relatives at the abandoned theatre he owns, but the party isn't fun for long since apparently one of them is a murderer.

Giallo thriller about a child killer roaming the streets of Venice. The family of the latest victim begin their own investigation. Soon finding they are in way over their heads, the killer now begins to target those who have discovered too much.

While visiting his favorite resort village during winter, a writer investigates the apparent suicide of a woman he was infatuated with.

The Great Dante, a prestigious magician, accidentally dies during a risky magic trick. Thirty-five years later, his son Lorenzo, also a magician, presents a show at one of the city's most important theaters. From this point on, a series of murders will begin to occur that someone tries to pin on him. Lorenzo will have to find out who it is and why this person wants to implicate him

As a thirteen year old, Martha Caldwell witnessed the death of her parents in a terrible railway accident. Barely surviving the tragedy herself, Martha was struck dumb due to the shock. Now an adult, the still mute Martha lives with her uncle Ralph in the Spanish countryside. Martha's cousing Jenny arrives to be with the family but is quickly stabbed to death. It appears that a sex maniac is roaming the countryside; killing pretty young girls. The already traumatized Martha seems likely to be the next victim but the case turns out to be far more complicated than it would first seem.

After her husband dies in a freak plane accident, a woman leaves London for Athens to collect his generous life insurance policy. She soon discovers that others besides herself are keen to get their hands on the money - and are willing to kill for it. Meanwhile, a private investigator arrives to investigate irregularities in the claim, teaming up with a beautiful reporter.

A beautiful American woman infiltrates the home of a novelist and his wife so she can investigate the disappearance of her lover — who was her employers’ previous secretary — and soon finds herself the target of the couple's erotic desires and a murder plot.

A series of random suicides in Rome, Italy are attributed to a heatwave, but a young pathologist named Simona—who is working on a thesis about murders disguised as suicides—suspects otherwise. When a young girl associated with Simona's playboy father ends up dead in another apparent suicide, Simona teams up with the girl's priest brother to prove she was murdered and track down the unknown serial killer.