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Harmonia
- Anno: 1970
- Nazione: United Kingdom, United States of America
- Genere: Dramma, Thriller
- Studio: Embankment Films, New Native Pictures, Sight Unseen Pictures
- Parola chiave: cult, based on true story, 1980s
- Direttore: Guy Nattiv
- Cast: Naomi Watts, Vicky Krieps, Odessa Young, Bella Ramsey