The purpose of this thesis is to examine Webster's The Duchess of Malfi, a representative example of the Jacobean "horror" play, in terms of its possible relationship to Antonin Artaud's Theatre of Cruelty, a dramatic theory chiefly propounded in The Theater and its Double. The introductory section outlines the basic aims and principles of a Theatre of Cruelty as postulated by Artaud, and attempts to show why, in view of recent theatrical experiments, Webster's play might profitably be investigated within this twentieth century context. The first two chapters proceed to a discussion of Webster's complex theatrical form, attempting to show how and why he makes full use of any available dramatic and theatrical device and convention to ai...