Based on his most famous case study - that of Russian aristocrat, Sergei Pankejeff - Sigmund Freud recounts the history of an obsessional neurosis. Pankejeff's troubling dream of a walnut tree full of white wolves earned him the title of 'The Wolf Man'. Pankejeff is one of five clinical case histories from which Freud extrapolated his theories of transference, the Oedipus complex, super-ego and psychosexual development. Freud's now classic psychoanalytic writing blurred the boundary between science and literature, which continues to provoke fierce debate to this day.