Dario Argento reportedly offered the title role to Ania Pieroni, who had briefly played the same character in Inferno (1980). The actress declined the offer, on account of her age and having been retired since 1985.
Udo Kier played "Dr. Frank Mandel" in Suspiria in 1977 and returned to the Three Mothers trilogy 30 years later in this film, though as a different character, "Padre Johannes".
The third part (with Suspiria (1977) and Inferno (1980)) of a trilogy of films about the "Three Mothers."
The first screening of the film's trailer took place at the 2007 Cannes Film Festival. On the same occasion, a restored print of Suspiria (1977) was shown in the Cannes Classics section.