The present study is concerned with the interpretation and observation of characters and space, through Dostoevsky's novels, Crime and Punishment and Notes from the Underground. An analysis of the characters, the consciousness and the aspects of human psychology and existence is made, while realism and objectivity are examined, which are approached through dialogue in Dostoevsky's work. As the creator of the polyphonic novel, he uses the concept of polyphony and gathers opposing and contradictory elements, forming totalities, which he uses in all the narrative techniques of his book. The author gives detailed descriptions of space in which the moral action of the characters takes place. The experience of the character in the space he lives, his perception of it, his movement, location and orientation, reflects his moral and existential course. The author uses specific spatial motifs and gathers all the points of the action there. The conscience of Dostoevsky's characters take the form of their rooms, that is, the narrow, suffocating and low-ceilinged spaces, forming psychological "underground spaces''. The irregular size of the rooms, their detailed description and at the same time their uncertainty, the lack of common necessary spaces, their identification with spatial motifs and the wavering point of view of their owners, is proof of the influence of polyphony on another element of the narrative, space. The identification of the psychology of the characters with the space in which they live and their isolation in the rooms, causes the blurring of the boundaries and the spectraliazation of their reality. The characters, as humans of the idea, ask themselves unanswerable questions, which lead them to: questioning their existence, inaction and risk of losing their identity. While they identify the space they live with their psychology, paradoxically, they also use it as a shelter. Dostoevsky describes this type of man as the "St Petersburg dreamer." The theory of Solipsism, aptly expresses the phenomenon of the inability of the protagonists of the novels, to recognize the other characters as persons with distinct, authentic and different consciences. An additional aspect of Dostoevsky's creative process is presented through his manuscripts. In addition to writing, observing the manuscripts, reveals the author's desire to represent by other means the ideas and issues that concerned him. With the tricks of the author, each reader individually represents the space and the story in their mind, creating imaginary visual images, which consist of nuggets of materials that belong to their consciousness. The photographic character of consciousness, as well as memory, results in the creation of abstract images, which are constantly reshaped by the character's subjective perception of space.