The Exquisite Cadaver

The Exquisite Cadaver AKA: The Cruel Ones is a 1969 Spanish film noir psychological thriller film directed by Vicente Aranda, based on the short story Bailando Para Parker written by Gonzalo Suárez. The plot follows a well-to-do publisher and family man who begins to receive severed body parts in the mail two years after his mistress committed suicide. Along with one of these bloody parcels is a letter of blackmail from the dead woman's former lesbian lover, who seeks vengeance.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.