Orgasmo is a 1969 movie

Film

A film, also called a movie or motion picture, is a series of still or moving images. It is produced by recording photographic images with cameras, or by creating images using animation techniques or visual effects...

 starring Carroll Baker

Carroll Baker

Carroll Baker is a former American actress who has enjoyed popularity as both a serious dramatic actress and, particularly in the 1960s, as a movie sex symbol...

 and Lou Castel

Lou Castel

Lou Castel is a Colombian actor known primarily for his work in Italian films.Born Ulv Quarzell in Bogotá, Castel moved to Europe as a young man. Interested in acting from an early age, he attended the Centro Sperimentale di Cinematografia, but was quickly kicked out. His first movie role was an...

, and directed by Umberto Lenzi

Umberto Lenzi

Umberto Lenzi , is an Italian film director who was very active in low budget crime films, peplums, spaghetti westerns, war movies, cannibal films and giallo murder mysteries ....

. The movie casts Baker as an American heiress who moves to Italy

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

 and befriends a young man and his girlfriend, only to discover that they are not what they seem.

This was one of many Italian movies - often of the giallo

Giallo

Giallo is an Italian 20th century genre of literature and film, which in Italian indicates crime fiction and mystery. In the English language it refers to a genre similar to the French fantastique genre and includes elements of horror fiction and eroticism...

genre - in which Carroll Baker starred in the late 1960s and early 1970s.

Orgasmo has also been called Paranoia in the United States. However, Umberto Lenzi directed a different movie called Paranoia in his native Italy.