A woman's nightmare of murder, maiming and mistrust proves to be more than a mere dream, in john parker's influential horror.stripped of dialogue ‐ using only sound effects and an unnerving score ‐ parker combines horror, film noir and expressionist methods to depict a mind descending into madness. Shocking audiences upon its original release, the film was initially banned by the new york state film board, who deemed it 'inhuman, indecent, and the quintessence of gruesomeness'.featuring music by george antheil ballet mécanique and foreshadowing the techniques of future psychological horrors, dementia is now available on blu‐ray for the very first time.