Teorema is, in my humble opinion, Pier-Paolo Pasolini's best movie, a true masterpiece transferring the viewer in a dreamlike world of signs and symbols to narrate a powerful story, an existentialist manifesto which you are bound never to forget. A stranger, impeccably acted by Terence Stamp, visits the household of an Italian upper-class family and changes the course of life for each resident forever. The film is an ecstatic visual trip to Pasolini's universe where all social, religious, and other norms are shattered and sexual attraction, as well as practice, becomes the key for the contact between a man and the metaphysical. The stranger seduces one by one all the members of the family before he suddenly announces his departure, leaving the father, mother, son, daughter, and housemaid in a void existential state, each one trying to come in terms with the new reality that the stranger introduced them. There is nothing more to be said about the story and the plot, it would spoil the viewing experience of this amazing film, just keep in mind that this is a genuinely philosophical film which will be better understood by those who are familiar with the philosophy of existence and the writings of French and German academics during the first half of the twentieth century. This is a movie that doesn't demand prior knowledge of the director's work, nevertheless, those who are not familiar with Pasolini's artwork may experience a sense of oddity, thus finding it more difficult to indulge in the profound meanings of the Italian filmmaker's magnum opus.