Susan Sontag in 1969 - Cannibal or Tarantola

Io veggio ben come ti tira
uno e altro disio, sí che tua cura

se stessa lega sí che fuor non spira.

Dante Alighieri, Paradiso, canto IV

While preparing [the] second version of the script [Duet for Cannibals] I was also choosing the locations and completing the casting. Agneta Ekmanner, who plays Ingrid, had already agreed to take part in the film in May, during my first, brief visit to Stockholm, when I only had a rough idea of the story in my head. I had asked Adriana Asti to be in the film in July, when I was in Rome, and the part of Francesca was written for her. Gösta Ekman, who plays Tomas, and Lars Ekborg, who plays Bauer, were cast in September.
Filming took place on locations in and around Stockholm in October and November, over a period of six weeks. We had thirty-four shooting days. The film was shot in black and white 35mm film with one Arriflex camera; all the dialogue and most of the effects were recorded direct with a Nagra. Since Duet for Cannibals was, as the expression goes, edited in camera, the actual editing, done in February and March 1969, went fairly smoothly. The first screening was at the Cannes Film Festival, under the auspices of the Quinzaine des Réalisateurs, in May 1969.
Susan Sontag, Duett för kannibaler, 1969