Il medium was developed due to director Silvio Amadio's interest in the occult, which he learned through his friend Demofilo Fidani.

[1] A film scenario with the same title was in Rome SIAE offices that were dated from October 17, 1975.

[1] Among the cast was Martine Brochard, who had little recollection about the making of the film, declaring "I only remember that it all seemed very homemade, and I had a very cold relationship with Amadio.

[1] Curti noted the film's horrific bits are limited to a dog attack, a burning painting that emits laughter and voices recorded from unknown sources on an audio tape.

[1] The film grossed a total of 15 million Italian lire domestically on its release.