Marco Castellini
•Two Siamese sisters, Danielle and Dominique, were surgically separated with a difficult operation, which saw only the first survive, while the other died during the operation. Danielle, who now works as a fashion model, drags behind a sort of split personality, which makes her believe, at certain moments, that she is Dominique. In this "guise" she transforms into a sadistic killer. A writer, who saw Danielle massacre a man with knife stabs, traces back the tortuous truth risking being killed in turn.
De Palma already demonstrates in this first thriller all the passion and respect he has for the cinema of master Hitchcock, not sparing citations and narrative references (especially from "Psycho") to the cinema of the "master of thrills". The screenplay is a bit chaotic, but the film offers several moments of suspense very dense and well articulated, with obsessive rhythms. It is not among the best films of De Palma's production but remains nevertheless clearly above the average standards of the genre.
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