Anna's dream sequence in Ingmar Bergman's film Passion (1969) is analysed on three levels: firstly, as an autonomous narrative; secondly, in the context of the film; and finally, in relation to Bergman's own film Shame (1968), which immediately precedes it and from which the images are taken. The importance of the extradiegetic in the film, an inverse reading key to the one offered in Shame and, finally, a mythological parallelism derived from a comparative approach, are respectively inferred. At last, dream, myth and cinema manifest themselves in Bergman's art as the three sides of a triangle on the exegesis of a film.