In devoting a whole book to Measure for Measure Miss Lascelles has expressed her conviction that in no other way can the sharp divisions of opinion which characterise recent criticism of the play be resolved. She considers that to continue discussing the large issues involved in the limited space of a single article or chapter is to continue to fail to take full account of the difficulties the reader or playgoer finds perplexing. Her study falls into three main sections. She begins by discussing other versions of the story in European literature that may have been known to Shakespeare, and the way in which they may be used to throw light on his intentions. Next, she undertakes a long and reflective analysis of the play's successive phases. Finally, at the conclusion of this essential investigation of the evidence, she shows how it supports the view that the complexity of Measure for Measure is the necessary condition of its greatness.