The Dark Other is a horror novel by Stanley G. Weinbaum. It was first published in 1950 by Fantasy Publishing Company, Inc. in an edition of 700 copies. The manuscript, written in the 1920s, was originally titled The Mad Brain. The novel concerns Patricia Lane who is in love with Nicholas Devine, a quiet and gentle writer. Devine undergoes sudden changes, becoming cold and calculating. Frightened by this, Lane consults psychologist Dr. Carl Horker,...