The article is devoted to cognitive peculiarities of a mythologem in modern fiction. The interaction between mythologem information potential and information space of a fictional text is considered. Some major frame models and their ways of actualization have been studied. Various linguistic means of mythologem represetation in fictional texts are analyzed. The analysis of the extracts from fiction reveals individual peculiarities of mythologem usage by different writers and allows to decode their intentions and to see the depth of the content in fictional texts. The importance of the research comes out of insufficiency of researches devoted to cognitive peculiarities of mythologems in modern English and American literature.