Two women bound by their shared hatred of one man plot his murder in Les Diaboliques, the 1955 French suspense classic that helped define the modern thriller.
What is Les Diaboliques about?
At a boarding school run by the harsh and controlling headmaster Michel Delassalle, his wife and his mistress find common ground in wanting him gone. Despite their rivalry, the two women set aside their differences long enough to carry out a plan to kill him. What should be the end of their ordeal instead becomes the beginning of a stranger one: Delassalle's body vanishes, and a string of unexplained occurrences starts to unravel the women's composure. Henri-Georges Clouzot directs with a patient, controlled hand, letting dread build through small details rather than shock, and the performances from Simone Signoret and Véra Clouzot anchor the film's shift from calculated crime to creeping unease.
About the cast
The film stars Simone Signoret and Véra Clouzot as the wife and mistress at the center of the plot, with Paul Meurisse as the headmaster and support from Charles Vanel, Jean Brochard, Pierre Larquey, Michel Serrault, and Thérèse Dorny.
Context & significance
Released in 1955 and shot in stark black and white, Les Diaboliques is a French production widely counted among the essential titles in the classic suspense tradition, and it appears on well-known lists of the genre's most enduring works. Its reputation for a tightly withheld final act has made it a frequent reference point whenever critics discuss how a thriller can build tension purely through structure and restraint rather than overt violence. The boarding-school setting itself does quiet work throughout the story, turning an institution built on order and routine into a place where the ordinary becomes steadily harder to trust, long before anything overtly frightening occurs on screen.
Watching Les Diaboliques on Ktime
Les Diaboliques is available to stream on K-Time with a free account login. K-Time's Farsi-language interface makes it simple for Persian-speaking audiences to find enduring international suspense classics like this one alongside newer releases.